Journal of Materials Engineering and Performance最新文献_第9页

Manufacturing for Laser Powder Bed Fusion of Oxide Dispersion Strengthened NiCoCr Alloy, GRX-810, for Turbomachinery Applications 用于涡轮机械的氧化分散强化NiCoCr合金（GRX-810）激光粉末床熔合的制造

IF 2.6 4区材料科学

Journal of Materials Engineering and Performance Pub Date : 2026-07-08 DOI: 10.1007/s11665-026-14221-2

Hallie Collopy, Paul Gradl, Adam Willis, Phillip Ligrani

{"title":"Manufacturing for Laser Powder Bed Fusion of Oxide Dispersion Strengthened NiCoCr Alloy, GRX-810, for Turbomachinery Applications","authors":"Hallie Collopy, Paul Gradl, Adam Willis, Phillip Ligrani","doi":"10.1007/s11665-026-14221-2","DOIUrl":"10.1007/s11665-026-14221-2","url":null,"abstract":"<div><p>GRX-810 is an oxide dispersion strengthened (ODS) NiCoCr medium entropy alloy developed for extreme environments such as rocket engine-, gas-, and land-based turbine engines and other extreme temperature applications. GRX-810 offers a 200% increase in oxidation resistance 200% increase in ultimate tensile strength and a 1000x increase in creep life at 2000 <span>(^circ)</span> F (1093 <span>(^circ)</span> C) over traditional wrought polycrystalline nickel-based alloys. The substantial increase in creep life offers tremendous advantages to hot gas turbine components. Currently, there is a deficit of data on the application of laser beam powder bed fusion (PBF-LB) manufacturing methods for turbomachinery using the GRX-810 alloy. Turbomachinery for rocket engine applications poses unique challenges for additive manufacturing. The requirements for hot gas turbines often include tight dimensional tolerances, no defects large enough to initiate a crack, and well-controlled surface texture. The performance of turbomachinery is dependent on surface quality and difficult to predict. These challenges require attention in manufacturing planning. The present paper explores the effects of a multitude of surface finishing post processing methods on GRX-810 turbomachinery surface texture, surface defects, aerodynamic performance, and heat transfer while discussing considerations such as dimensional accuracy. Findings indicate varying surface texture from surface finishing post processing of GRX-810 significantly influences the thermal and aerodynamic performance with extremely textured surfaces having lower profile losses overall and generally higher local spatially-resolved heat transfer coefficients.</p></div>","PeriodicalId":644,"journal":{"name":"Journal of Materials Engineering and Performance","volume":"35 Focus—Space","pages":"38368 - 38385"},"PeriodicalIF":2.6,"publicationDate":"2026-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11665-026-14221-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149214568","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanism of Discoloration and Corrosion in Security Filter Cartridge of Converter Valve Cooling System—A Case Study of the Sichuan Power Grid 换流阀冷却系统安全滤筒变色腐蚀机理研究——以四川电网为例

IF 2.6 4区材料科学

Journal of Materials Engineering and Performance Pub Date : 2026-07-08 DOI: 10.1007/s11665-026-14541-3

Jun Fan, Zhi Geng, Jie Wang, Zhigao Wang, Tao Liu, Bowen Guan, Dike Chen, Dewen Su, Jun Li

{"title":"Mechanism of Discoloration and Corrosion in Security Filter Cartridge of Converter Valve Cooling System—A Case Study of the Sichuan Power Grid","authors":"Jun Fan, Zhi Geng, Jie Wang, Zhigao Wang, Tao Liu, Bowen Guan, Dike Chen, Dewen Su, Jun Li","doi":"10.1007/s11665-026-14541-3","DOIUrl":"10.1007/s11665-026-14541-3","url":null,"abstract":"<div><p>Frequent discoloration of security filter cartridge in the cooling systems of high-voltage direct current converter valves during operation affects equipment reliability. Taking a converter station in the Sichuan power grid as a case study, this research systematically investigated the causes of discoloration and the corrosion mechanisms of 316L stainless steel during the circulating cooling process through on-site water quality testing, simulated filtration test, and characterization of phase composition and microstructure. It was confirmed that chloride ions (Cl<sup>–</sup>) in the cooling water are the key factors inducing localized corrosion of stainless steel and destabilizing the passivation film. Furthermore, the uneven distribution of the passivation film thickness resulting in interference effects and the presence of iron oxides was identified as the primary cause of discoloration. Additionally, it was found that sulfate ions (SO<sub>4</sub><sup>2–</sup>) significantly inhibit the corrosive action of Cl<sup>–</sup> by reducing its adsorption through competitive adsorption. It also synergistically enhances the stability of the passivation film with the molybdenum (Mo) element in 316L stainless steel, thereby suppressing discoloration and corrosion. The research results provide a critical theoretical basis and engineering reference for the precise control of water quality and the design of anti-corrosion protection in cooling systems for similar ultra-high-voltage direct current transmission projects.</p></div>","PeriodicalId":644,"journal":{"name":"Journal of Materials Engineering and Performance","volume":"35 36","pages":"37749 - 37760"},"PeriodicalIF":2.6,"publicationDate":"2026-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149099099","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Using ICME to Design a Novel High-Strength, Printable, and Burn-Resistant Nickel-Based Superalloy for Reusable Rocket Engines 利用ICME设计一种新型高强度、可打印、耐燃烧的镍基高温合金，用于可重复使用的火箭发动机

IF 2.6 4区材料科学

Journal of Materials Engineering and Performance Pub Date : 2026-07-07 DOI: 10.1007/s11665-026-14463-0

Gary F. Whelan, Abhinav Saboo

{"title":"Using ICME to Design a Novel High-Strength, Printable, and Burn-Resistant Nickel-Based Superalloy for Reusable Rocket Engines","authors":"Gary F. Whelan, Abhinav Saboo","doi":"10.1007/s11665-026-14463-0","DOIUrl":"10.1007/s11665-026-14463-0","url":null,"abstract":"<div><p>There is a trade-off in nickel-based superalloys between burn resistance in a high-pressure oxygen combustion environment and strength. High-performance, closed-cycle rocket engines use high-pressure liquid oxygen (LOX) which can create a combustion reaction when exposed to common commercially available high-strength nickel alloys. In the interest of minimizing weight and maximizing thrust of rockets, a high-strength, burn-resistant nickel-based superalloy is ideal. This is especially important for reusable rockets, where the degradation of materials must be minimized to reduce the need to replace components between launches and the relatively lower operating temperature of a full-flow staged-combustion engines enabled in part by LOX-compatible materials can significantly improve thermal fatigue and creep life. Additionally, with the recent progress toward industrialization of space travel, there are more rocket manufacturers than ever, and there is a need for flexible, fast, and supply chain resilient manufacturing paths such as additive manufacturing. With known trade-offs between printability, high-pressure oxygen burn resistance, and high strength for nickel-based superalloys due to a propensity for strain-age cracking in precipitation-strengthened alloys, the three objectives of high strength, printability, and burn resistance result in a complex alloy design scenario. Using the ICMD<sup>®</sup> Software Platform, novel alloys are rapidly designed by co-optimizing these three key properties with physics-based integrated computational materials engineering (ICME) modeling.</p></div>","PeriodicalId":644,"journal":{"name":"Journal of Materials Engineering and Performance","volume":"35 Focus—Space","pages":"38403 - 38421"},"PeriodicalIF":2.6,"publicationDate":"2026-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149214570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of Surface Grinding on the Surface Integrity and Fatigue Performance of the Third-Generation Single-Crystal Superalloy DD9 表面磨削对第三代单晶高温合金DD9表面完整性和疲劳性能的影响

IF 2.6 4区材料科学

Journal of Materials Engineering and Performance Pub Date : 2026-07-07 DOI: 10.1007/s11665-026-14180-8

Jianmin Dong, Jiarong Li, Mei Han

{"title":"Effect of Surface Grinding on the Surface Integrity and Fatigue Performance of the Third-Generation Single-Crystal Superalloy DD9","authors":"Jianmin Dong, Jiarong Li, Mei Han","doi":"10.1007/s11665-026-14180-8","DOIUrl":"10.1007/s11665-026-14180-8","url":null,"abstract":"<div><p>To investigate the effects of surface grinding with different tools on the surface integrity and tensile–tensile high-cycle fatigue properties of DD9 alloy at 760 °C, grinding heads, sand belts, and grinding wheels were employed to remove material from specimens of DD9 alloy after standard heat treatment, aiming to provide technical support for its engineering application. The three-dimensional surface topography, hardness, and microstructure after thermal exposure of different specimens were analyzed. Subsequently, the 760 °C tensile–tensile high-cycle fatigue properties of sand belt ground specimens with 0.05 mm removal were tested. A scanning electron microscope (SEM) was used to observe the fracture surfaces, and a transmission electron microscope (TEM) was employed to examine the dislocation morphology near the fractures. The results revealed that surface grinding with all three tools degraded the surface integrity of the specimens. The surface topographies varied depending on the tools used: Discontinuous pits were observed after grinding with grinding head, while continuous and regular furrows were observed after grinding with the sand belt and the grinding wheel. Among the three tools, wheel grinding resulted in the highest roughness, hardness, and cellular recrystallization depth of the specimens after thermal exposure. Notably, the fatigue strength of sand belt ground specimens was comparable to that of untreated specimens. Furthermore, the dislocation distribution near the fractures was closely related to stress amplitude: Under low stress amplitudes, dislocations were mainly concentrated in the <i>γ</i> phase channels; under high stress amplitudes, dislocations were observed shearing the <i>γ</i>′ phase. This study provides key insights into the rational selection of grinding tools for DD9 alloy, which is of great significance for improving the surface quality and fatigue reliability of DD9 alloy components in high-temperature service environments.</p></div>","PeriodicalId":644,"journal":{"name":"Journal of Materials Engineering and Performance","volume":"35 33","pages":"34213 - 34223"},"PeriodicalIF":2.6,"publicationDate":"2026-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148962128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Machining Induced Residual Stress in Ti6Al4V with Different Cooling Techniques 不同冷却工艺对Ti6Al4V合金加工残余应力的影响

IF 2.6 4区材料科学

Journal of Materials Engineering and Performance Pub Date : 2026-07-07 DOI: 10.1007/s11665-026-14501-x

Srikanth Srimanthula, Srinu Banoth, Vamsi Krishna Pasam, Naresh Kumar Maroju, Venu Gopal Anne

{"title":"Machining Induced Residual Stress in Ti6Al4V with Different Cooling Techniques","authors":"Srikanth Srimanthula, Srinu Banoth, Vamsi Krishna Pasam, Naresh Kumar Maroju, Venu Gopal Anne","doi":"10.1007/s11665-026-14501-x","DOIUrl":"10.1007/s11665-026-14501-x","url":null,"abstract":"<div><p>Residual stress developed on the surface is critical in influencing the surface integrity and fatigue behaviour of machined components in Ti6Al4V. This study investigates the variation in circumferential residual stress generated under various machining environments, such as dry cutting, vegetable oil-based hybrid nano-cutting fluid (VoBHNCF), vibration-assisted turning (VAT), Vortex tube-assisted cooling (VTAC), and vortex-cooled vibration-assisted turning (VC-VAT). Dry machining results in high tensile surface residual stress, whereas cooling and lubrication-assisted conditions shift the stress state to the compressive regime. VC-VAT produced better compressive circumferential surface residual stress (235.9 MPa), highlighting its superior capability to reduce friction and thermal effect at the tool–work interface. VoBHNCF (197.5 MPa), VTAC (186.3 MPa), and VAT (174.2 MPa) also exhibited moderate compressive circumferential surface residual stress due to their lubrication, cooling and intermittent cutting action, respectively.</p></div>","PeriodicalId":644,"journal":{"name":"Journal of Materials Engineering and Performance","volume":"35 36","pages":"37824 - 37836"},"PeriodicalIF":2.6,"publicationDate":"2026-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149098107","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Numerical Modeling and Optimization for the Laser-Resistance Hybrid Thermal Imprinting of Pd-based Metallic Glass for Better Formability pd基金属玻璃耐激光混合热印迹成形工艺的数值模拟与优化

IF 2.6 4区材料科学

Journal of Materials Engineering and Performance Pub Date : 2026-07-07 DOI: 10.1007/s11665-026-14483-w

Sendong Ren, Ninshu Ma, Yurie Tai, Kunio Narasaki, Rui Yamada, Masanari Datekyu, Hidemi Kato

{"title":"Numerical Modeling and Optimization for the Laser-Resistance Hybrid Thermal Imprinting of Pd-based Metallic Glass for Better Formability","authors":"Sendong Ren, Ninshu Ma, Yurie Tai, Kunio Narasaki, Rui Yamada, Masanari Datekyu, Hidemi Kato","doi":"10.1007/s11665-026-14483-w","DOIUrl":"10.1007/s11665-026-14483-w","url":null,"abstract":"<div><p>Metallic glass is an advanced non-crystalline material which has great application potential in the biomedical field, whose manufacturing quality was related to the temperature history significantly. In the present research, the laser-resistance hybrid heating process of Pd<sub>42.5</sub>Ni<sub>7.5</sub>Cu<sub>30</sub>P<sub>20</sub> bulk metallic glass (BMG) was analyzed numerically to improve its formability during thermal imprinting. The glass transition temperature and onset temperature of crystallization of BMG under different heating rates were measured to clarify the time-temperature-transformation diagram. The contact heat transfer coefficient in heating equipment was calibrated by experiment. The in-house finite element (FE) code JWRIAN-HYBRID was employed to predict the temperature distribution and thermal cycles on BMG. The optimization of heating process was discussed in detail. The result showed that the laser heating efficiency was about 4.4%. In the designed heating process, the maximum temperature of BMG reached about 400 ℃ and it can only stay in the expected temperature range for 35 s. With the optimized double pulse resistance heating, the duration time of BMG in supercooled liquid region extended to 720 s, which was enough to realize a 30-μm grid in thermal imprinting. In the hybrid heating method, resistance heating gave more contribution to preheating and insulation for the smooth heat input; laser heating was employed to supply energy and control temperature.</p></div>","PeriodicalId":644,"journal":{"name":"Journal of Materials Engineering and Performance","volume":"35 36","pages":"37891 - 37901"},"PeriodicalIF":2.6,"publicationDate":"2026-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149098167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Impact of Nanoceramic Inclusions on the Performance Characteristics of Al-Fe-Si Alloy Composites 纳米陶瓷夹杂物对Al-Fe-Si合金复合材料性能的影响

IF 2.6 4区材料科学

Journal of Materials Engineering and Performance Pub Date : 2026-07-07 DOI: 10.1007/s11665-026-14478-7

P. Sivakumar, Pon Azhagiri, P. Gopal, N. Senthilkumar

{"title":"Impact of Nanoceramic Inclusions on the Performance Characteristics of Al-Fe-Si Alloy Composites","authors":"P. Sivakumar, Pon Azhagiri, P. Gopal, N. Senthilkumar","doi":"10.1007/s11665-026-14478-7","DOIUrl":"10.1007/s11665-026-14478-7","url":null,"abstract":"<div><p>This work explores ultrasonic-assisted stir-cast Al-Fe-Si (AA8011) alloy-based aluminum nanocomposites (ANCs) strengthened with nano zirconia (nZrO<sub>2</sub>) (1-3 wt.%), nano titanium carbide (nTiC) (1-3 wt.%), and hybrid nZrO<sub>2</sub> + nTiC (1 + 1 and 1.5 + 1.5 wt.%) to enhance physical, mechanical, and tribological performance. XRD confirmed the FCC-Al matrix with the successful incorporation of monolithic nZrO<sub>2</sub> and nTiC phases, with reinforcement peak intensity increasing with particle content. Compared with as-cast AA8011 (experimental density: 2.701 g/cm<sup>3</sup>; porosity: 0.33%), the ANCs showed increased density and porosity (up to 1.43%), attributed to nanoparticle agglomeration and limited wettability. Mechanical attributes were enhanced markedly, ultimate tensile strength increased from 61.21 MPa (as-cast) to 102.39 MPa (AA8011 + 1%nZrO<sub>2</sub> + 1%nTiC), reduction in ductility was noticed from 8.62 to 2.87% due to deformation induced by reinforcements. Yield and flexural strengths elevated from 40.15 and 72.5 MPa to 79.06 and 132.87 MPa (AA8011 + 1%nZrO<sub>2</sub> + 1%nTiC), indicating strong nanoparticle strengthening and hybrid effect. Hardness improved from 42.77 HV (as-cast) to 47.26 HV (AA8011 + 1.5%nZrO<sub>2</sub> + 1.5nTiC), whereas the impact strength ranged from 13.2 to 13.85 J. Pin-on-disk studies demonstrated significant improvements in tribology: AA8011 + 1%nZrO<sub>2</sub> + 1%nTiC had the least wear depth (123.03 µm) and friction coefficient (0.702). Hybrid combinations had stronger friction responses and smoother worn patterns because they formed a cohesive mechanically mixed/oxide tribolayer, which made them more resilient to wear.</p></div>","PeriodicalId":644,"journal":{"name":"Journal of Materials Engineering and Performance","volume":"35 36","pages":"37636 - 37657"},"PeriodicalIF":2.6,"publicationDate":"2026-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149099153","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of Heat Treatment on the Mechanical Properties and Microstructure of AA7075/AlSi10Mg Sandwich Produced by Direct Metal Laser Sintering 热处理对直接金属激光烧结AA7075/AlSi10Mg夹层力学性能和组织的影响

IF 2.6 4区材料科学

Journal of Materials Engineering and Performance Pub Date : 2026-07-07 DOI: 10.1007/s11665-026-14459-w

S. Karthi, V. Senthilkumar, C. Velmurugan

{"title":"Effects of Heat Treatment on the Mechanical Properties and Microstructure of AA7075/AlSi10Mg Sandwich Produced by Direct Metal Laser Sintering","authors":"S. Karthi, V. Senthilkumar, C. Velmurugan","doi":"10.1007/s11665-026-14459-w","DOIUrl":"10.1007/s11665-026-14459-w","url":null,"abstract":"<div><p>The present study investigates the effect of heat-treatment on the mechanical response of additively manufactured AA7075/AlSi10Mg dissimilar alloy sandwich specimens produced by Direct Metal Laser Sintering. Further, the SWS is subjected to three different heat-treatment conditions namely HT 1-SWS (Solution heat treatment 350 °C for 2 h + artificial aging 180 °C for 12 h), HT 2-SWS (Solution heat treatment 400 °C for 2 h + artificial aging 180 °C for 12 h) and HT 3-SWS (Solution heat treatment 450 °C for 2 h + artificial aging 180 °C for 12 h) and the corresponding changes in mechanical and metallurgical characteristics of the SWS is studied post heat treatment. The tensile properties, including percentage elongation and ultimate tensile strength of the as-built (AB-SWS), HT 1-SWS, HT 2-SWS and HT 3-SWS specimens were systematically evaluated and compared. Among the tested conditions, the HT 3-SWS specimen exhibited the highest yield strength compared to the AB-SWS, HT 1-SWS and HT 2-SWS samples. The ultimate tensile strength values for the AB-SWS, HT 1-SWS , HT 2-SWS and HT 3-SWS specimens were measured as 223, 198.5, 239.3 and 141.7 MPa respectively. Additionally, the HT 1-SWS specimen demonstrated the highest microhardness value of 138.4 Hv, exceeding those of the as-built, HT 2-SWS, and HT 3-SWS specimens. Overall, the results underscore a strong impact on the microstructure with the post heat treatment of the DMLS specimens. It was found that the intermediate heat treatment (350-450 °C) optimizes the compromise between strength and ductility, whereas 450 °C induced the over-aging and performance deterioration due to the grain size and Si particles precipitated inside the microstructure during the heat treatment. These results give clarification for tailoring post-processing strategies for dissimilar alloy sandwich specimen in advanced lightweight applications.</p></div>","PeriodicalId":644,"journal":{"name":"Journal of Materials Engineering and Performance","volume":"35 35","pages":"36207 - 36221"},"PeriodicalIF":2.6,"publicationDate":"2026-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149034799","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Improvement of Electrical Conductivity, Grain Refinement, and Mechanical Characteristics of Repeatedly Rolled Bi-metal Composite 双金属复合材料电导率、晶粒细化及力学性能的改善

IF 2.6 4区材料科学

Journal of Materials Engineering and Performance Pub Date : 2026-07-07 DOI: 10.1007/s11665-026-14527-1

Dongmei Zhou

{"title":"Improvement of Electrical Conductivity, Grain Refinement, and Mechanical Characteristics of Repeatedly Rolled Bi-metal Composite","authors":"Dongmei Zhou","doi":"10.1007/s11665-026-14527-1","DOIUrl":"10.1007/s11665-026-14527-1","url":null,"abstract":"<div><p>To achieve uniform deformation and optimized properties, the alteration of strain path in severe plastic deformation processes is crucial. Therefore, different rolling degrees including 0-degree, 90-degree, and 180-degree were applied to Cu/ZEK100 composites during the accumulative roll-bonding (ARB) method. The role of rolling rotation degrees on the variation of texture, grain structure, morphology, electrical conductivity, and mechanical features was studied. More uniform fragmentation and distribution of the reinforcing layer was achieved by alteration of rolling path, especially 90-degree rotation. Additionally, the alteration of rolling direction increased the grain refinement and the texture intensity. Furthermore, the electrical conductivity of composites decreased with the rolling path change. After pass 8, the values of electrical conductivity were 67, 65, and 59 % IACS after changing the rolling direction by 0-degree, 180-degree, and 90-degree, respectively. Furthermore, the strength-elongation trade-off versus deformation pass was improved by rolling rotation. The highest tensile strength of 439 MPa and tensile elongation of 23% were obtained by 90-degree rotation after pass 8. Also, the alteration of rolling direction resulted in more hardness growth. The maximum hardness of 217 HV for Cu and 100 HV for ZEK100 was achieved by 90-degree rotation after pass 8.</p></div>","PeriodicalId":644,"journal":{"name":"Journal of Materials Engineering and Performance","volume":"35 36","pages":"37671 - 37685"},"PeriodicalIF":2.6,"publicationDate":"2026-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149098169","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of Precursor Concentration on the Morphology, Optical Properties, and Biological Activity of Silver Nanomaterials Synthesized by Atmospheric Pressure Microplasma 前驱体浓度对常压微等离子体合成银纳米材料形貌、光学性质和生物活性的影响

IF 2.6 4区材料科学

Journal of Materials Engineering and Performance Pub Date : 2026-07-06 DOI: 10.1007/s11665-026-14443-4

Saeeda Saleem, M. Naeem, J. C. Díaz‑Guillén, Sadia Nazer, R. R. M. de Sousa, Javed Iqbal, José Díaz‑Elizondo, M. Álvarez‑Vera

{"title":"Effect of Precursor Concentration on the Morphology, Optical Properties, and Biological Activity of Silver Nanomaterials Synthesized by Atmospheric Pressure Microplasma","authors":"Saeeda Saleem, M. Naeem, J. C. Díaz‑Guillén, Sadia Nazer, R. R. M. de Sousa, Javed Iqbal, José Díaz‑Elizondo, M. Álvarez‑Vera","doi":"10.1007/s11665-026-14443-4","DOIUrl":"10.1007/s11665-026-14443-4","url":null,"abstract":"<div><p>Silver nanomaterials are widely utilized in drug delivery and cancer treatment due to their exceptional optical and antimicrobial features that can improve the efficacy of therapy. In this work, silver nanomaterials are synthesized with atmospheric-pressure microplasma at different precursor concentrations (6, 9, 12, and 15 mM) using silver nitrate as a silver source; additionally, sucrose (2 mM) is used as a stabilizing agent. From the x-ray diffraction (XRD), it is clear that all the synthesized samples exhibit peaks due to silver, without impurity peaks, indicating pure nanomaterial synthesis. The crystallite size reduces from 32.76 to 30.55 nm with increasing precursor concentration. The scanning electron microscopy (SEM) result suggests that the morphology transforms from nanosheets to nanoparticles as a function of precursor concentration. With increasing precursor concentration, the bandgap increases (3.38, 3.43, 3.5, and 3.57 eV). Fourier transform infrared (FTIR) spectroscopy showed bands at 500‐600 cm<sup>−1</sup> associated with silver nanomaterial formation. The nanomaterials exhibit effective antimicrobial activity, particularly at 6 and 15 mM precursor concentrations. This study demonstrates that precursor concentration is an important and tunable parameter controlling morphology and enhancing physicochemical and biological properties, supporting potential biomedical and antimicrobial applications.</p></div>","PeriodicalId":644,"journal":{"name":"Journal of Materials Engineering and Performance","volume":"35 35","pages":"36662 - 36679"},"PeriodicalIF":2.6,"publicationDate":"2026-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149034835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0