Materials Characterization最新文献_第3页

Effect of Sc and Zr co-microalloying on microstructure evolution and mechanical properties of 7085Al alloy Sc和Zr共微合金化对7085Al合金组织演变和力学性能的影响

IF 4.8 2区材料科学

Materials Characterization Pub Date : 2025-05-21 DOI: 10.1016/j.matchar.2025.115200

Rui Cao, Xizhou Kai, Yuchao Xing, Wenjie Bao, Wei Qian, Yutao Zhao

{"title":"Effect of Sc and Zr co-microalloying on microstructure evolution and mechanical properties of 7085Al alloy","authors":"Rui Cao, Xizhou Kai, Yuchao Xing, Wenjie Bao, Wei Qian, Yutao Zhao","doi":"10.1016/j.matchar.2025.115200","DOIUrl":"10.1016/j.matchar.2025.115200","url":null,"abstract":"<div><div>In this paper, the trace addition of Sc and Zr in 7085Al alloy significantly improved strength and ductility at room and high temperature. The Al<sub>3</sub>(Sc, Zr) precipitates with Sc-rich core and Zr-rich shell and their size ranged from 20 to 80 nm, such special structure made Al<sub>3</sub>(Sc, Zr) precipitates owned excellent thermal stability. Hence Al<sub>3</sub>(Sc, Zr) precipitates can still effectively pin grain boundaries and hinder dislocation movement at high temperature. The dislocation accumulation caused by Al<sub>3</sub>(Sc, Zr) precipitates during hot rolling promoted dynamic recrystallization. The average grain size of α-Al grains was increased with the increase of rolling reduction and the average size grains of 7085Al- 0.3Sc- 0.2Zr alloy with 90 % rolling reduction were decreased to 3.2 μm. Compared with 7085Al matrix alloy under 90 % rolling reduction, the average grains size was decreased to 70.3 %. Al<sub>3</sub>(Sc, Zr) precipitates had good strengthening effect at both room and high temperature. The UTS, YS and elongation of 7085Al- 0.3Sc- 0.2Zr alloy at 25 °C were increased to 611.7 MPa, 523.8 MPa and 13.8 % respectively, the UTS, YS and elongation of 7085Al- 0.3Sc- 0.2Zr alloy at 300 °C were increased to 223.4 MPa, 201.2 MPa, 27.9 % respectively. The increase of mechanical properties was attributed to the synergistic strengthening effect induced by the fine grain strengthening and the Orowan bypassing strengthening mechanisms.</div></div>","PeriodicalId":18727,"journal":{"name":"Materials Characterization","volume":"225 ","pages":"Article 115200"},"PeriodicalIF":4.8,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144139684","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Non-isothermal oxidation kinetics and mechanism of whisker reinforced ZrB2-SiC-MoSi2 composite powder 晶须增强ZrB2-SiC-MoSi2复合粉末的非等温氧化动力学及机理

IF 4.8 2区材料科学

Materials Characterization Pub Date : 2025-05-20 DOI: 10.1016/j.matchar.2025.115196

Ruixiong Zhai , Yuwei Liang , Taihong Huang , Qiang Ji , Quan Dong , Tao Wang , Yanhong Zhuang , Jingbiao Bai , Zijie Yang , Peng Song

引用次数: 0

The formation of the defects in γ′ phase under the high temperature and super-gravity stress 高温和超重力应力作用下γ′相缺陷的形成

IF 4.8 2区材料科学

Materials Characterization Pub Date : 2025-05-20 DOI: 10.1016/j.matchar.2025.115202

Mengyuan Han , Debin Zhao , Hao Fan , Junbo Zhao , Wenshuai Wang , Xiaoyi Yuan , Haibo Long , Hua Wei , Shengcheng Mao , Lihua Wang , Ze Zhang , Xiaodong Han

引用次数: 0

Enhancing mechanical properties and microstructure evaluation in lap welding joint of 5754/6061 dissimilar aluminum alloys via laser-CMT hybrid welding 激光- cmt复合焊接提高5754/6061异种铝合金搭接接头力学性能及组织评价

IF 4.8 2区材料科学

Materials Characterization Pub Date : 2025-05-19 DOI: 10.1016/j.matchar.2025.115188

Jie Su , Minglie Hu , Zhen Li , Jinglong Tang , Xiaohua Wang , Zhen Luo

{"title":"Enhancing mechanical properties and microstructure evaluation in lap welding joint of 5754/6061 dissimilar aluminum alloys via laser-CMT hybrid welding","authors":"Jie Su , Minglie Hu , Zhen Li , Jinglong Tang , Xiaohua Wang , Zhen Luo","doi":"10.1016/j.matchar.2025.115188","DOIUrl":"10.1016/j.matchar.2025.115188","url":null,"abstract":"<div><div>This study pioneers the application of Laser-cold metal transfer (CMT) hybrid welding and CMT welding techniques to weld 5754/6061 dissimilar aluminum alloys. A systematic comparison of the two joints under the same heat input is conducted, covering macroscopic morphology, analysis of droplet force, microstructure evolution, interfacial microstructure, and mechanical properties. The findings reveal that the Laser-CMT process modifies joint geometry and wetting, affecting grain growth and element diffusion. It remarkably improves joint mechanical properties. Compared to CMT, the maximum tensile load rises by 29.3 %, elongation by 18.3 %, microhardness by 6.3 %, and the joint tensile strength reaches 275.9 N/mm. This research further postulates the strengthening and formation mechanisms of Laser-CMT joints. The work is expected to provide technical and theoretical references for precisely controlling the geometry, interface, and mechanical properties of dissimilar aluminum alloy lap joints, and for optimizing the connection process of dissimilar materials for various applications.</div></div>","PeriodicalId":18727,"journal":{"name":"Materials Characterization","volume":"225 ","pages":"Article 115188"},"PeriodicalIF":4.8,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144099054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 T6 heat treatment on microstructure and mechanical properties of Hf-modified Al7075 alloy fabricated by laser powder bed fusion T6热处理对激光粉末床熔合制备hf改性Al7075合金组织和力学性能的影响

IF 4.8 2区材料科学

Materials Characterization Pub Date : 2025-05-19 DOI: 10.1016/j.matchar.2025.115190

Yuankun Zhang , Kan Liu , Pengju Shi , Aoke Jiang , Yishi Su , Fenghua Luo , Haoze Lin , Xinpeng Wang , Yu Long

{"title":"Effect of T6 heat treatment on microstructure and mechanical properties of Hf-modified Al7075 alloy fabricated by laser powder bed fusion","authors":"Yuankun Zhang , Kan Liu , Pengju Shi , Aoke Jiang , Yishi Su , Fenghua Luo , Haoze Lin , Xinpeng Wang , Yu Long","doi":"10.1016/j.matchar.2025.115190","DOIUrl":"10.1016/j.matchar.2025.115190","url":null,"abstract":"<div><div>Very recently, we have proposed a new Hf-modified Al7075 alloy, which was demonstrated to have good compatibility with laser powder bed fusion (LPBF) processing. The present work has further explored the response of the microstructure and mechanical properties of the alloy to a T6 heat treatment (solution treatment at 470 °C for 1 h + aging at 120 °C for 24 h). It was found that after the heat treatment, Al<sub>3</sub>Hf precipitates have experienced a huge change, from a spheroidal form with an L1<sub>2</sub> structure to a needle-like form with a D0<sub>22</sub> structure, whereas the grain morphology, size, orientation have little been altered. Meanwhile, the strength of the alloy has obviously been improved without losing much of the ductility after the heat treatment. The improvement of the strength is mainly attributed to the produced D0<sub>22</sub>-Al<sub>3</sub>Hf particles, which have an unexpected coherent interface with the α-Al matrix, a large volume fraction, and a small radius of the repeated building blocks.</div></div>","PeriodicalId":18727,"journal":{"name":"Materials Characterization","volume":"225 ","pages":"Article 115190"},"PeriodicalIF":4.8,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144105124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Determining the controlling factor of the stress corrosion cracking of 2024 aluminum alloy with different heat treatments in thin electrolyte layer environment 确定2024铝合金在薄电解质层环境下不同热处理应力腐蚀开裂的控制因素

IF 4.8 2区材料科学

Materials Characterization Pub Date : 2025-05-19 DOI: 10.1016/j.matchar.2025.115183

Hao Wu , Liwei Wang , Guixue Bian , Ziyangyang Wei , Huiyun Tian , Zhongyu Cui

引用次数: 0

C/B ratio-driven phase modulation in stainless steel coating: A synergistic strategy for corrosion and wear performance optimization 不锈钢涂层中C/B比驱动的相位调制：一种优化腐蚀和磨损性能的协同策略

IF 4.8 2区材料科学

Materials Characterization Pub Date : 2025-05-19 DOI: 10.1016/j.matchar.2025.115179

Jieliang Ye, Yueqiao Feng, Zhuguo Li

{"title":"C/B ratio-driven phase modulation in stainless steel coating: A synergistic strategy for corrosion and wear performance optimization","authors":"Jieliang Ye, Yueqiao Feng, Zhuguo Li","doi":"10.1016/j.matchar.2025.115179","DOIUrl":"10.1016/j.matchar.2025.115179","url":null,"abstract":"<div><div>The development of stainless steel coatings confronts an intrinsic trade-off between mechanical durability and corrosion resistance under extreme service conditions. Although carbon strengthens materials via carbide precipitation, this mechanism carries significant risks of introducing galvanic corrosion. Current scientific understanding remains incomplete regarding the optimal hard-phase design that simultaneously maximizes hardness and corrosion integrity in stainless systems. This study systematically investigated the influence of C/B ratio on microstructural evolution, corrosion resistance, and wear performance in modified stainless steel coatings. Four coatings with varying C/B ratios (0.8C + 0.2B, 0.5C + 0.5B, 0.2C + 0.8B, and 1.0B) were fabricated via laser cladding. Microstructural characterization revealed progressive phase transformations: austenite-dominated → martensite-dominated → ferrite-martensite dual-phase systems, accompanied by sequential reinforcement phase transitions from M<sub>23</sub>C<sub>6</sub>-type carboborides to M<sub>3</sub>C-type carboborides and finally to M<sub>2</sub>B borides. Notably, the 0.2C + 0.8B coating exhibited peak hardness (654 HV<sub>0.5</sub>) and the strongest wear resistance by virtue of the superior elastic-plastic deformation resistance of the matrix coupled with the high hardness and modulus of M<sub>3</sub>(C, B). Concurrently, this composition demonstrated secondary corrosion resistance due to the smallest volta potential difference (the minimum corrosion driving force) between the matrix and M<sub>3</sub>(C, B). These findings attest to the application potential of the M<sub>3</sub>C-type reinforcement + martensite matrix in the field of corrosion and wear, and providing guidelines for designing advanced stainless steels with tailored properties.</div></div>","PeriodicalId":18727,"journal":{"name":"Materials Characterization","volume":"225 ","pages":"Article 115179"},"PeriodicalIF":4.8,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144124729","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Detwinning mechanism of textured nano-twinned Cu under shock loading: Role of shock pressure and direction 冲击载荷下织构纳米孪晶Cu的脱孪生机理：冲击压力和冲击方向的作用

IF 4.8 2区材料科学

Materials Characterization Pub Date : 2025-05-19 DOI: 10.1016/j.matchar.2025.115192

Caihong Hou , Xuhai Li , Wenjun Zhu , Xiaoping Ouyang , Lei Xu , Zhenhua Cao , Yuying Yu , Jianbo Hu

{"title":"Detwinning mechanism of textured nano-twinned Cu under shock loading: Role of shock pressure and direction","authors":"Caihong Hou , Xuhai Li , Wenjun Zhu , Xiaoping Ouyang , Lei Xu , Zhenhua Cao , Yuying Yu , Jianbo Hu","doi":"10.1016/j.matchar.2025.115192","DOIUrl":"10.1016/j.matchar.2025.115192","url":null,"abstract":"<div><div>Understanding the dynamic response of textured nano-twinned copper (Cu) under dynamic loading poses a significant challenge. This study investigates the dynamic deformation mechanisms involving twinning, dislocation behavior, and texture evolution in textured nano-twinned Cu through both experimental and simulation approaches, considering various loading pressure and directions. Our findings demonstrate that the plastic deformation, dominated by detwinning, is dependent on both loading pressure and direction. Specifically, when the loading pressure exceeds a critical threshold (the normal stress of ∼12 GPa, corresponding to the shear stress of ∼1.5 GPa), the twin volume fraction decreases monotonically, reaching approximately 60 % with increasing shock pressure. Furthermore, comparative analysis across three distinct loading directions reveals that detwinning is most pronounced at 90° loading, followed by 0° loading, with 45° loading exhibiting the least detwinning activity, aligning with variations in shear stress. Postmortem characterizations and molecular dynamics simulations indicate that detwinning is primarily driven by the interaction between dislocations and complete coherent twin boundaries (CTBs), leading to the formation of twin dislocations (TDs). The glide of TDs along the twin plane facilitates the migration of CTBs in the normal direction, resulting in the development of vertical step-like incoherent twin boundaries (ITBs), which ultimately contributes to twin degradation.</div></div>","PeriodicalId":18727,"journal":{"name":"Materials Characterization","volume":"225 ","pages":"Article 115192"},"PeriodicalIF":4.8,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144105832","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Multi-stage rolling regulates deformation twins and Sc-rich precipitation behavior to enhance comprehensive properties of advanced Cu-Cr-Zr-Sc alloys 多级轧制调节变形孪晶和富sc析出行为，提高高级Cu-Cr-Zr-Sc合金的综合性能

IF 4.8 2区材料科学

Materials Characterization Pub Date : 2025-05-19 DOI: 10.1016/j.matchar.2025.115184

Bowen Ma , Engang Wang , Weixin Luo , Xue Zhao , Wenna Zhu , Shuanglu Zhang , Tao Peng , Liang Li

{"title":"Multi-stage rolling regulates deformation twins and Sc-rich precipitation behavior to enhance comprehensive properties of advanced Cu-Cr-Zr-Sc alloys","authors":"Bowen Ma , Engang Wang , Weixin Luo , Xue Zhao , Wenna Zhu , Shuanglu Zhang , Tao Peng , Liang Li","doi":"10.1016/j.matchar.2025.115184","DOIUrl":"10.1016/j.matchar.2025.115184","url":null,"abstract":"<div><div>Through the adjustment of the multi-stage rolling process to induce deformation twinning and alter the precipitation behavior of Sc-rich phases, we developed an advanced Cu-Cr-Zr-Sc alloy with excellent tensile strength (631.33 ± 10.9 MPa), yield strength (597.14 ± 9.26 MPa), hardness (219.06 ± 3.94 HV), electrical conductivity (63.3 ± 0.16 % IACS), and wear resistance, comparable to alloys produced by severe plastic deformation under optimal multi-stage rolling conditions (60 % CR1 + 450 °C × 2 h + 50 % CR2 + 200 °C × 1 h). The uniform distribution of Cu<sub>4</sub>(Sc, Zr) at both the micron scale (∼1.5 μm) and nanoscale was a key factor in achieving high hardness while maintaining high strength. Meanwhile, under the optimal rolling conditions, the alloy remained high electrical conductivity due to the near-equal rolling reductions in two stages, which induced the formation of more deformation twins. During the friction process, the higher matrix strength facilitated the transfer of oxides to the matrix, effectively reducing the friction coefficient. Compared to the non-doped Sc alloy (∼61.68 μm), the wear track depth was reduced by nearly half (∼34.92 μm). Furthermore, we observed short rod-like stacking faults within the matrix, which were caused by Shockley partial dislocations. Finally, we found that some of the Sc exists in the form of atomic clusters within the Cu alloy indicating that, in addition to grain boundary strengthening, dislocation strengthening, and precipitation strengthening, cluster strengthening is also a key factor in improving the alloy's strength and maintaining high ductility.</div></div>","PeriodicalId":18727,"journal":{"name":"Materials Characterization","volume":"225 ","pages":"Article 115184"},"PeriodicalIF":4.8,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144134305","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 B and C elements on microstructure, mechanical and tribological properties of TiN coating deposited by PACVD B、C元素对PACVD沉积TiN涂层微观结构、力学性能和摩擦学性能的影响

IF 4.8 2区材料科学

Materials Characterization Pub Date : 2025-05-19 DOI: 10.1016/j.matchar.2025.115178

Farid Movassagh-Alanagh , Amir Abdollah-Zadeh , Ramin Aghababaei

{"title":"Effects of B and C elements on microstructure, mechanical and tribological properties of TiN coating deposited by PACVD","authors":"Farid Movassagh-Alanagh , Amir Abdollah-Zadeh , Ramin Aghababaei","doi":"10.1016/j.matchar.2025.115178","DOIUrl":"10.1016/j.matchar.2025.115178","url":null,"abstract":"<div><div>In recent years, hard coatings have gained various industrial applications due to their excellent properties. This research describes the effects of adding B, C and both elements on the microstructure, mechanical and tribological properties of TiN film synthesized by PACVD. The results indicate that incorporating boron and carbon into TiN results in the creation of a nanocomposite microstructure, where amorphous phases surround nano-crystals of TiN, h-BN, and TiB<sub>2</sub>. The existence of carbon in the TiCN and TiBCN coatings manifests as DLC and amorphous carbon. The use of BBr<sub>3</sub> and CH<sub>4</sub> for depositing TiBCN coatings reduces the intensity of plasma formed surrounding the samples and increases the etching rate, resulting in a thickness reduction from 2.16 to 0.28 μm. The introduction of boron and carbon into the TiN coating enhances its hardness from 16.6 to 30 GPa, attributed to the formation of nanocomposite microstructures. TiBCN coating exhibits an indentation toughness value of 1.52 ± 0.2 MPa.m<sup>0.5</sup>, the highest among the deposited coatings. The addition of carbon to both TiN and TiBN coatings reduces their coefficients of friction, decreasing from approximately 0.55 and 0.4, respectively, to about 0.3. This reduction is attributed to the creation of lubricating compounds like amorphous carbon and DLC.</div></div>","PeriodicalId":18727,"journal":{"name":"Materials Characterization","volume":"225 ","pages":"Article 115178"},"PeriodicalIF":4.8,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144105122","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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