Journal of Materials Research and Technology-Jmr&t最新文献_第7页

Enhanced corrosion resistance of K-TIG welded DH32 steel joints with a Ni interlayer: A comprehensive electrochemical and microstructural investigation Ni中间层增强DH32钢K-TIG焊接接头耐蚀性能的电化学和显微组织综合研究

IF 6.2 2区材料科学

Journal of Materials Research and Technology-Jmr&t Pub Date : 2025-03-14 DOI: 10.1016/j.jmrt.2025.03.126

Zhuoyong Liang , Leilei Wu , Wenhong Hu , Song Zhang , Yonghua Shi , Maimaitiyiming Maimaiti

{"title":"Enhanced corrosion resistance of K-TIG welded DH32 steel joints with a Ni interlayer: A comprehensive electrochemical and microstructural investigation","authors":"Zhuoyong Liang , Leilei Wu , Wenhong Hu , Song Zhang , Yonghua Shi , Maimaitiyiming Maimaiti","doi":"10.1016/j.jmrt.2025.03.126","DOIUrl":"10.1016/j.jmrt.2025.03.126","url":null,"abstract":"<div><div>Welding technology is a critical pillar of modern manufacturing, particularly in shipbuilding and engineering under extreme environments. However, the corrosion resistance of weld seams limits their application in corrosive conditions. This issue is especially pronounced in keyhole tungsten inert gas (K-TIG) welding, where high heat input often leads to coarse grain structures and compositional segregation, resulting in reduced corrosion resistance. This study systematically investigates the effect of nickel (Ni) interlayers with varying thicknesses on the corrosion resistance of weld seams in K-TIG-welded DH32 steel and explores the underlying mechanisms. Electrochemical testing, including open circuit potential, electrochemical impedance spectroscopy, and potentiodynamic polarization, reveals that with increasing Ni content, the corrosion potential of the weld seam shifts significantly in the positive direction. The corrosion current density decreases to 4.56 μA/cm<sup>2</sup>, while the charge transfer resistance increases nearly threefold to 1294.9 Ω⋅cm<sup>2</sup>, indicating a substantial enhancement in corrosion resistance. Microstructural analysis demonstrates that the addition of Ni refines the weld seam grains, transforming the ferrite-pearlite structure into lath martensite and forming Ni-enriched grain boundaries, which improve the compactness and stability of the passive film. Corrosion product analysis shows that high-Ni welds form mixed oxides (NiFe<sub>2</sub>O<sub>4</sub>) with high stability and low ion migration rates. This dense protective layer significantly reduces the driving force for corrosion reactions. In conclusion, Ni microalloying improves the corrosion resistance of K-TIG weld seams by optimizing the microstructure, composition of corrosion products, and electrochemical performance.</div></div>","PeriodicalId":54332,"journal":{"name":"Journal of Materials Research and Technology-Jmr&t","volume":"36 ","pages":"Pages 570-579"},"PeriodicalIF":6.2,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143680685","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Exploiting the lubricating and anti-corrosive functionalities of graphite particles to improve the wear and corrosion resistance of the cobalt matrix 利用石墨颗粒的润滑和防腐功能，提高钴基体的耐磨损和耐腐蚀性能

IF 6.2 2区材料科学

Journal of Materials Research and Technology-Jmr&t Pub Date : 2025-03-14 DOI: 10.1016/j.jmrt.2025.03.117

Mahshid Tafreshi , Soheil Mahdavi , Mir Saman Safavi

{"title":"Exploiting the lubricating and anti-corrosive functionalities of graphite particles to improve the wear and corrosion resistance of the cobalt matrix","authors":"Mahshid Tafreshi , Soheil Mahdavi , Mir Saman Safavi","doi":"10.1016/j.jmrt.2025.03.117","DOIUrl":"10.1016/j.jmrt.2025.03.117","url":null,"abstract":"<div><div>The improved surface functions, in particular resistance of the surface to both wear and corrosion, are sought in harsh environment applications. In this study, the surface of the carbon steel was finished by Co-Graphite (Gr) composite coatings galvanostatically electrodeposited from a sulfate bath containing 0–10 g/L of Gr particles at a constant current density of 80 mA/cm<sup>2</sup>. The results of the microstructural analysis using field-emission scanning electron microscopy (FESEM) and X-ray diffraction (XRD) illustrated that the embedded Gr particles changed the morphology of the grains, and made surface denser without an obvious variation in the phase structure of the coatings. Electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization (PDP) assays were utilized to determine the corrosion behavior of the coatings. Results demonstrated a 160 % increase in charge-transfer resistance of the Co layer is obtained with the addition of 5 g/L Gr particles to the electrolyte. The tribological features of the layers were measured by the pin-on-disk method, and outcomes revealed a tremendous reduction in the coefficient of friction (COF) of the Co deposit, up to 80 %, upon the inclusion of the Gr particles in the coatings. The Co-Gr composite electrodeposits indicated superior tribo-corrosion performance than that of pure Co, which make them potential candidates to be used as a durable protective coating in different industries.</div></div>","PeriodicalId":54332,"journal":{"name":"Journal of Materials Research and Technology-Jmr&t","volume":"36 ","pages":"Pages 315-325"},"PeriodicalIF":6.2,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143645063","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Temperature-dependent mechanical properties of as-cast Mg-Gd-Zr alloys evaluated by shear punch testing 用剪切冲孔试验评价铸态Mg-Gd-Zr合金的温度相关力学性能

IF 6.2 2区材料科学

Journal of Materials Research and Technology-Jmr&t Pub Date : 2025-03-14 DOI: 10.1016/j.jmrt.2025.03.125

Mohammadreza Maghzi, Hamed Mirzadeh, Reza Mahmudi

{"title":"Temperature-dependent mechanical properties of as-cast Mg-Gd-Zr alloys evaluated by shear punch testing","authors":"Mohammadreza Maghzi, Hamed Mirzadeh, Reza Mahmudi","doi":"10.1016/j.jmrt.2025.03.125","DOIUrl":"10.1016/j.jmrt.2025.03.125","url":null,"abstract":"<div><div>The temperature-dependent shear mechanical properties of Mg-3Gd-<em>x</em>Zr (<em>x</em> = 0, 0.2, 0.5, and 0.8 wt%) alloys were investigated using the shear punch testing (SPT) across a temperature range of 25–400 °C. The Zr addition led to a remarkable grain refinement, where the average grain sizes of 348 ± 43, 101 ± 39, 42 ± 8, and 23 ± 4 μm were obtained for <em>x</em> values of 0, 0.2, 0.5, and 0.8, respectively. This refinement improved the ultimate shear strength (USS), which peaked at 115 MPa for testing at 25 °C for the 0.8 wt% Zr alloy, compared to the value of 92 MPa for the Zr-free sample. As the temperature increased above 300 °C, a transition from the cold deformation regime to the hot working one occurred, leading to a sharp decline in USS and a reduced sensitivity of flow stress to the grain size, which manifested itself into the rapid fall of the Hall-Petch slope. For the hot working range, the dislocation glide and climb in the climb-controlled regime was characterized as the underlying deformation mechanism with the activation energy ranging from 135 to 168 kJ/mol. These findings elucidate the interplay between grain refinement, temperature, and deformation mechanisms, providing a foundation for the application of Mg alloys in high-performance situations.</div></div>","PeriodicalId":54332,"journal":{"name":"Journal of Materials Research and Technology-Jmr&t","volume":"36 ","pages":"Pages 417-423"},"PeriodicalIF":6.2,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143645071","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Rapid design of high-end copper alloy processes combining orthogonal experiments, machine learning, and Pareto analysis 结合正交实验、机器学习和帕累托分析的高端铜合金工艺快速设计

IF 6.2 2区材料科学

Journal of Materials Research and Technology-Jmr&t Pub Date : 2025-03-14 DOI: 10.1016/j.jmrt.2025.03.119

Peiwen Yun , Huadong Fu , Hongtao Zhang , Jingtai Sun , Menghe Zhao , Jianxin Xie

{"title":"Rapid design of high-end copper alloy processes combining orthogonal experiments, machine learning, and Pareto analysis","authors":"Peiwen Yun , Huadong Fu , Hongtao Zhang , Jingtai Sun , Menghe Zhao , Jianxin Xie","doi":"10.1016/j.jmrt.2025.03.119","DOIUrl":"10.1016/j.jmrt.2025.03.119","url":null,"abstract":"<div><div>To overcome the challenge of using data-driven methods for alloy design in extremely limited sample data, this study proposes a rapid alloy design strategy that integrates orthogonal experiments, machine learning, and Pareto analysis. The Cu-0.22Cr-0.23Sn-0.25Zn-0.025Si alloys (C2ZS2) developed in our previous research work is used as a research case for process optimization. A small dataset through 25 groups of orthogonal experiments was established and the support vector machine regression algorithm was used to construct a machine learning model for the relationship of aging parameters and properties. Furthermore, improved Pareto analysis was used to optimize aging parameters and accelerate alloy design efficiency. C2ZS2 alloys exhibited excellent comprehensive properties after optimized aging parameters (primary aging at 490 °C for 9 h and secondary aging at 420 °C for 4 h), achieving the combination of high strength and high electrical conductivity, with a tensile strength of (600 ± 2) MPa and an electrical conductivity of (75.1 ± 0.4) %IACS. Remarkably, it reached the dual upper limits of mechanical and electrical properties of comparable commercial EFTEC-64T-C alloys for high-end lead frame manufacturing, with tensile strength of 490–588 MPa and conductivity of 71 %IACS-75 %IACS.</div></div>","PeriodicalId":54332,"journal":{"name":"Journal of Materials Research and Technology-Jmr&t","volume":"36 ","pages":"Pages 1005-1016"},"PeriodicalIF":6.2,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143680218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Effect of quenching temperature on the structure and properties of Cu-Zr-Al glassy ribbons 淬火温度对Cu-Zr-Al玻璃带组织和性能的影响

IF 6.2 2区材料科学

Journal of Materials Research and Technology-Jmr&t Pub Date : 2025-03-14 DOI: 10.1016/j.jmrt.2025.03.114

Lu Cao , Hao-Ran Jiang , Jochi Tseng , Yi-Fan Gao , Qing Wang , Yan-Dong Jia , Lina Hu , Gang Wang

{"title":"Effect of quenching temperature on the structure and properties of Cu-Zr-Al glassy ribbons","authors":"Lu Cao , Hao-Ran Jiang , Jochi Tseng , Yi-Fan Gao , Qing Wang , Yan-Dong Jia , Lina Hu , Gang Wang","doi":"10.1016/j.jmrt.2025.03.114","DOIUrl":"10.1016/j.jmrt.2025.03.114","url":null,"abstract":"<div><div>Since the glass structure is inherited from the alloy melt, the thermal history experienced by the melt during cooling significantly influences the structure and properties of metallic glasses. In this work, the effect of melt quenching temperature on the atomic structure, thermophysical properties, and mechanical properties of a Cu-Zr-Al metallic glass is systematically investigated, using a combination of state-of-the-art techniques, including synchrotron-based high-energy X-ray diffraction and chip-based flash differential scanning calorimetry. It is found that for the studied Cu-Zr-Al alloy, the temperature window for preparing completely amorphous and contamination-free ribbons is remarkably narrow, spanning merely ∼150 K. This window is bounded by heterogeneous nucleation due to the unmelted nuclei at the lower limit and significantly increased O content due to severe chemical reactions at the higher limit. Furthermore, the glass transition, crystallization, thermal stability, and mechanical properties of the Cu-Zr-Al alloy are found to be highly sensitive to the melt temperature prior to quenching during melt-spinning. Two key factors—the disordering and homogenization effects—as well as the progressive enhancement of O contamination with increasing quenching temperature—are revealed to govern the structural and property evolutions. These findings provide valuable insights into tailoring glass structures and properties through the deliberate control of melt thermal history.</div></div>","PeriodicalId":54332,"journal":{"name":"Journal of Materials Research and Technology-Jmr&t","volume":"36 ","pages":"Pages 272-283"},"PeriodicalIF":6.2,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143641730","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Enhanced strength and fracture features of tailings-based concrete reinforced with fibers and X-shaped rocks 用纤维和 X 型岩石加固的尾矿混凝土的强度和断裂特性得到增强

IF 6.2 2区材料科学

Journal of Materials Research and Technology-Jmr&t Pub Date : 2025-03-14 DOI: 10.1016/j.jmrt.2025.03.118

Meilin Jiang , Shuai Cao , Erol Yilmaz

{"title":"Enhanced strength and fracture features of tailings-based concrete reinforced with fibers and X-shaped rocks","authors":"Meilin Jiang , Shuai Cao , Erol Yilmaz","doi":"10.1016/j.jmrt.2025.03.118","DOIUrl":"10.1016/j.jmrt.2025.03.118","url":null,"abstract":"<div><div>The traditional room-and-pillar mining method benefits from the use of unclassified tailings-based concrete (UTC) to reinforce X-shaped broken pillars, offering advantages such as tailings utilization, reduced demand for sand aggregates, increased pillar strength, and improved stability of mined-out areas. This study investigates the influence of polypropylene (PP) fiber dosage (0 %, 0.3 %, 0.6 %, and 0.9 %) on the macro-strength and microstructure of fiber-reinforced UTC for reinforcing broken rock (F-UTCRR), and analyzes the toughening and crack resistance mechanisms of the fibers. Uniaxial compressive strength (UCS) test and SEM were employed to examine compressive and microstructural features of F-UTCRR. The results indicate that fiber dosage significantly affects the stress-strain behavior of F-UTCRR. As fiber content increases, both peak stress and strain first increase, then decrease, with the F-UTCRR-0.6 mixture exhibiting the highest compressive and deformation resistance, showing a 6.6 MPa rise in uniaxial strength and a 0.9 % rise in peak strain rate. At the macroscopic level, fiber concentration influences crack types, with the dominant crack pattern evolving from 'tension-tension-shear mixing-shear' as fiber content increases. The fibers primarily function through the bridging effect, inhibiting crack propagation. At the microscopic levels, fibers mainly compact the matrix and enhance the strength by bonding and interfacial friction behavior. Among the indexes in this paper, the performance advantage of F-UTCRR with 0.6 % fiber content is significant. Consequently, the findings of the research provide a theoretical foundation to explore strength and failure behavior of F-UTCRR, with significant practical implications for improving pillar damage resistance, extending pillar service life, maintaining roof plate stability in mining areas, and certifying employee/equipment's security.</div></div>","PeriodicalId":54332,"journal":{"name":"Journal of Materials Research and Technology-Jmr&t","volume":"36 ","pages":"Pages 62-71"},"PeriodicalIF":6.2,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143628058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Comprehensive analysis of thermophysical properties of the NaNO3–KNO3 mixture with metastable phases 具有亚稳相的NaNO3-KNO3混合物热物理性质的综合分析

IF 6.2 2区材料科学

Journal of Materials Research and Technology-Jmr&t Pub Date : 2025-03-14 DOI: 10.1016/j.jmrt.2025.03.128

D. Sergeev , G. Nénert , D. Rapp , F. Beckstein , M. Schöneich , M. Müller , J. Gertenbach

{"title":"Comprehensive analysis of thermophysical properties of the NaNO3–KNO3 mixture with metastable phases","authors":"D. Sergeev , G. Nénert , D. Rapp , F. Beckstein , M. Schöneich , M. Müller , J. Gertenbach","doi":"10.1016/j.jmrt.2025.03.128","DOIUrl":"10.1016/j.jmrt.2025.03.128","url":null,"abstract":"<div><div>This study focuses on the comprehensive analysis of the NaNO<sub>3</sub>–KNO<sub>3</sub> system, a salt mixture that is extensively used as a heat transfer fluid and thermal energy storage material in concentrated solar power (CSP) plants. Despite its common application, discrepancies exist in the reported equilibrium phase diagrams, largely due to the formation of metastable phases influenced by experimental conditions. This work combines various thermophysical methods, including differential scanning calorimetry, thermomechanical analysis, laser flash analysis, and high-temperature X-ray diffraction, to resolve these discrepancies. The thermal and structural properties of a 50 mol % NaNO<sub>3</sub> – 50 mol % KNO<sub>3</sub> mixture have been determined. Significant differences in phase transition temperatures and volume were observed between the first and second heating cycles. In-situ HTXRD confirmed the formation of metastable solid solution phases upon cooling to room temperature after the first heating. The comprehensive analysis provided insights into the equilibrium and metastable states of the mixture, highlighting the importance of combining thermal analysis techniques with XRD for a thorough characterization of material properties.</div></div>","PeriodicalId":54332,"journal":{"name":"Journal of Materials Research and Technology-Jmr&t","volume":"36 ","pages":"Pages 561-569"},"PeriodicalIF":6.2,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143680768","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Hierarchically structured bi-continuous Mg–Ti interpenetrating-phase composites 分层结构双连续Mg-Ti互穿相复合材料

IF 6.2 2区材料科学

Journal of Materials Research and Technology-Jmr&t Pub Date : 2025-03-14 DOI: 10.1016/j.jmrt.2025.03.121

Ming Zhang , Zengqian Liu , Shaogang Wang , Jian Zhang , Linlin Li , Qiang Wang , Yuquan Hao , Zhengwang Zhu , Zhefeng Zhang

{"title":"Hierarchically structured bi-continuous Mg–Ti interpenetrating-phase composites","authors":"Ming Zhang , Zengqian Liu , Shaogang Wang , Jian Zhang , Linlin Li , Qiang Wang , Yuquan Hao , Zhengwang Zhu , Zhefeng Zhang","doi":"10.1016/j.jmrt.2025.03.121","DOIUrl":"10.1016/j.jmrt.2025.03.121","url":null,"abstract":"<div><div>|Biological materials in nature demonstrate hierarchical 3D interpenetrating-phase structures, which contribute to their exceptional mechanical and functional properties. However, replicating these architectures into metallic materials remains a significant challenge. In this study, a series of Mg–Ti interpenetrating-phase composites with one, two, and three levels of structural hierarchy were fabricated using a combined approach of melt infiltration, liquid metal dealloying, and space holder addition. These composites exhibit a multimodal distribution of characteristic structural dimensions, with bi-continuous and mutually interpenetrated Mg and Ti phases across various length scales in 3D space. The compressive properties of these composites were investigated, and their Young's modulus was theoretically modeled based on the geometric characteristics and volume fractions of constituent phases. This study presents an effective approach for developing new high-performance interpenetrating-phase metal composites with hierarchical structures in bulk form.</div></div>","PeriodicalId":54332,"journal":{"name":"Journal of Materials Research and Technology-Jmr&t","volume":"36 ","pages":"Pages 236-243"},"PeriodicalIF":6.2,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143641823","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Synergistic effect of boron and nitrogen on strength enhancement and anisotropy mitigation in Ti6Al4V fabricated via directed energy deposition 硼和氮对定向能沉积制备Ti6Al4V合金强度增强和各向异性抑制的协同效应

IF 6.2 2区材料科学

Journal of Materials Research and Technology-Jmr&t Pub Date : 2025-03-14 DOI: 10.1016/j.jmrt.2025.03.113

SeungHyeok Chung , Jae Joon Kim , Junghwan Kim , Seungchan Cho , Ho Jin Ryu , Taegyu Lee

{"title":"Synergistic effect of boron and nitrogen on strength enhancement and anisotropy mitigation in Ti6Al4V fabricated via directed energy deposition","authors":"SeungHyeok Chung , Jae Joon Kim , Junghwan Kim , Seungchan Cho , Ho Jin Ryu , Taegyu Lee","doi":"10.1016/j.jmrt.2025.03.113","DOIUrl":"10.1016/j.jmrt.2025.03.113","url":null,"abstract":"<div><div>Controlling the mechanical properties and microstructure anisotropies of additively manufactured Ti6Al4V alloys remains a challenge for improving their performance in demanding applications. Therefore, this study examined the effects of adding B and N on the microstructural evolution and mechanical properties of Ti6Al4V alloys fabricated using laser powder directed energy deposition (LP-DED). The SMART process, which is a novel composite powder fabrication method, was used to prepare feedstocks for LP-DED. This approach enabled control over the contents of B and N to optimize the microstructure and mechanical properties of the Ti6Al4V alloys. The addition of B resulted in effectively refined prior-β grains through constitutional supercooling and TiB precipitation. The addition of N resulted in the formation of a solid solution within the matrix without significant grain refinement. When B and N were added simultaneously, their individual roles in Ti6Al4V remained unchanged compared to their separate additions. However, the combined addition of B and N exhibited a synergistic effect, achieving a balanced improvement in both strength and elongation anisotropy. By deepening the understanding of B and N interactions in Ti alloys, these findings pave the way for a strategy to enhance structural reliability and suppress anisotropy in additively manufactured Ti6Al4V alloys for aerospace, automotive, energy, and biomedical applications.</div></div>","PeriodicalId":54332,"journal":{"name":"Journal of Materials Research and Technology-Jmr&t","volume":"36 ","pages":"Pages 613-626"},"PeriodicalIF":6.2,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143680689","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Microstructure evolution and mechanical properties of AZ31 magnesium alloy by ultra-high frequency transient induction heating 超高频瞬态感应加热AZ31镁合金的组织演变及力学性能

IF 6.2 2区材料科学

Journal of Materials Research and Technology-Jmr&t Pub Date : 2025-03-14 DOI: 10.1016/j.jmrt.2025.03.124

Jingkai Feng , Jie Wang , Pengfei Zhang , Luyao Jiang , Daliang Yu , Fei Guo , Xiting Zhong

{"title":"Microstructure evolution and mechanical properties of AZ31 magnesium alloy by ultra-high frequency transient induction heating","authors":"Jingkai Feng , Jie Wang , Pengfei Zhang , Luyao Jiang , Daliang Yu , Fei Guo , Xiting Zhong","doi":"10.1016/j.jmrt.2025.03.124","DOIUrl":"10.1016/j.jmrt.2025.03.124","url":null,"abstract":"<div><div>AZ31 magnesium alloy plate with excellent mechanical properties is quickly prepared by rolling and electromagnetic induction heating (REIH) in this study. After five cycles of electromagnetic induction heating (EIH), The plasticity of the magnesium sheet increased from 7.7 % to 12.5 %, while the strength remained relatively constant. The high strength can be attributed to the reduced in average grain size and the increased dislocation density. As the number of EIH cycles increases, dislocations are gradually distributed uniformly, crystal spacing is increased, rheological stresses on the (10–11) and (10–12) planes are reduced, and the <c+a> dislocation slip system is activated during deformation. The reason is that EIH generates an electric current (electron wind) in the rolled AZ31 magnesium alloy, causing electrons to collide with lattice atoms, thereby transferring momentum to the atoms and facilitating dislocation motion. This unique atomic diffusion path induces the change of the localized crystal structure and enhances texture strength. This offers a novel technological route for the fabrication of magnesium alloys with high strength and plasticity.</div></div>","PeriodicalId":54332,"journal":{"name":"Journal of Materials Research and Technology-Jmr&t","volume":"36 ","pages":"Pages 751-761"},"PeriodicalIF":6.2,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143680451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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