Acta Metallurgica Sinica-English Letters最新文献_第10页

Intermetallic Compounds Formation in Dissimilar Friction Stir Welding of Mg/Cu Alloys 镁/铜合金异种摩擦搅拌焊接中金属间化合物的形成

IF 2.9 2区材料科学

Acta Metallurgica Sinica-English Letters Pub Date : 2024-06-13 DOI: 10.1007/s40195-024-01714-z

Xue Li, Qingzhen Zhao, Hao Su, Ji Chen, Chuansong Wu

引用次数: 0

Effects of Boron Addition on the Microstructure and Mechanical Properties of γ′-Strengthened Directionally Solidified CoNi-Base Superalloy 加硼对γ′-强化定向凝固 CoNi-Base 超合金微观结构和力学性能的影响

IF 2.9 2区材料科学

Acta Metallurgica Sinica-English Letters Pub Date : 2024-06-13 DOI: 10.1007/s40195-024-01715-y

Shasha Qu, Yingju Li, Bingyu Lu, Cuiping Wang, Yuansheng Yang

引用次数: 0

Hot Deformation Behavior and Workability of a New Ni–W–Cr Superalloy for Molten Salt Reactors 熔盐反应堆用新型 Ni-W-Cr 超合金的热变形行为和可加工性

IF 2.9 2区材料科学

Acta Metallurgica Sinica-English Letters Pub Date : 2024-06-13 DOI: 10.1007/s40195-024-01701-4

Long Liu, Zijian Zhou, Jie Yu, Xinguang Wang, Chuanyong Cui, Rui Zhang, Yizhou Zhou, Xiaofeng Sun

{"title":"Hot Deformation Behavior and Workability of a New Ni–W–Cr Superalloy for Molten Salt Reactors","authors":"Long Liu, Zijian Zhou, Jie Yu, Xinguang Wang, Chuanyong Cui, Rui Zhang, Yizhou Zhou, Xiaofeng Sun","doi":"10.1007/s40195-024-01701-4","DOIUrl":"10.1007/s40195-024-01701-4","url":null,"abstract":"<div>The hot deformation behavior of a newly developed Ni–W–Cr superalloy for use in 800 °C molten salt reactors (MSRs) was looked into by isothermal compression tests in the temperature range of 1050–1200 °C with a strain rate of 0.001–1 s−1 under a true strain of 0.693. An Arrhenius-type model for the Ni–W–Cr superalloy was constructed by fitting the corrected flow stress data. In this model, the effect of dispersion of solid solution elements during thermal deformation on microstructure evolution was considered, as well as the effects of friction and adiabatic heating on the temperature and strain rate-dependent variation of flow stresses. The hot deformation activation energy of the Ni–W–Cr superalloy was 323 kJ/mol, which was less than that of the Hastelloy N alloy (currently used in MSRs). According to the rectified flow stress data, processing maps were created. In conjunction with the corresponding deformation microstructures, the flow instability domains of the Ni–W–Cr superalloy were determined to be 1050–1160 °C/0.03–1 s−1 and 1170–1200 °C/0.001–0.09 s−1. In these deformation conditions, a locally inhomogeneous microstructure was caused by flow—i.e., incomplete dynamic recrystallization and hot working parameters should avoid sliding into these domains. The ideal processing hot deformation domain for the Ni–W–Cr superalloy was determined to be 1170–1200 °C/0.6–1 s−1.</div>","PeriodicalId":457,"journal":{"name":"Acta Metallurgica Sinica-English Letters","volume":"37 8","pages":"1453 - 1466"},"PeriodicalIF":2.9,"publicationDate":"2024-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40195-024-01701-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141347896","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 Grain Refining Effect of Mg–Zr Master Alloy on Magnesium Alloys via a Synergistic Strategy Involving Heterogeneous Nucleation and Solute-Driven Growth Restriction 通过异质成核和溶质驱动的生长限制协同策略增强镁-Zr 母合金对镁合金的晶粒细化效果

IF 2.9 2区材料科学

Acta Metallurgica Sinica-English Letters Pub Date : 2024-06-06 DOI: 10.1007/s40195-024-01719-8

Gang Zeng, Hong Liu, Jing-Peng Xiong, Jian-Long Li, Yong Liu

{"title":"Enhanced Grain Refining Effect of Mg–Zr Master Alloy on Magnesium Alloys via a Synergistic Strategy Involving Heterogeneous Nucleation and Solute-Driven Growth Restriction","authors":"Gang Zeng, Hong Liu, Jing-Peng Xiong, Jian-Long Li, Yong Liu","doi":"10.1007/s40195-024-01719-8","DOIUrl":"10.1007/s40195-024-01719-8","url":null,"abstract":"<div>Zirconium (Zr) emerges as the most effective grain refiner for magnesium (Mg) alloys incorporating Zr. Typically, Zr is introduced in the form of an Mg–Zr master alloy. However, within Mg–Zr master alloys, Zr predominantly exists in a particle form, which tends to aggregate due to attractive van der Waals forces. The clustered Zr is prone to settling, thereby reducing its refining impact on Mg alloys. In this work, a combined pretreatment process for Mg–Zr master alloys was proposed, encompassing the introduction of a physical field to intervene the agglomeration of particle Zr and the employ of high-temperature dissolution and peritectic reactions to promote the solid solution of Zr. The results demonstrate that the particle Zr within the pretreated Mg–Zr master alloy is effectively dispersed and refined, and greater solute Zr levels can be achieved. The subsequent grain refinement ability was studied on a typical Mg–6Zn–0.6Zr (wt%) alloy. The outcome highlights that an improvement in the grain refinement efficacy (32.4%) of Mg–Zr master alloys was obtained with a holding time of 60 min. The pretreated Mg–Zr master alloy significantly augments the efficiency of grain refinement for Mg alloys through a synergistic strategy involving heterogeneous nucleation and solute-driven growth restriction. The crucial factor in achieving effective grain refinement of Zr in Mg alloys lies in regulating the presence and morphology of Zr in the Mg–Zr master alloy, distinguishing between particle Zr and solute Zr. This study introduces a novel method for developing more efficient Mg–Zr refiners.</div>","PeriodicalId":457,"journal":{"name":"Acta Metallurgica Sinica-English Letters","volume":"37 8","pages":"1354 - 1366"},"PeriodicalIF":2.9,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141377277","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

Microstructure and Mechanical Properties of Al2O3p/AZ91 Magnesium Matrix Laminated Material Adjusted by Freezing Temperature 受冷冻温度影响的 Al2O3p/AZ91 镁基质层压材料的微观结构和力学性能

IF 2.9 2区材料科学

Acta Metallurgica Sinica-English Letters Pub Date : 2024-06-06 DOI: 10.1007/s40195-024-01717-w

Ze-Xin Bai, Kun-Kun Deng, Ze-Qi Du, Kai-Bo Nie, Chao Xu, Quan-Xin Shi

{"title":"Microstructure and Mechanical Properties of Al2O3p/AZ91 Magnesium Matrix Laminated Material Adjusted by Freezing Temperature","authors":"Ze-Xin Bai, Kun-Kun Deng, Ze-Qi Du, Kai-Bo Nie, Chao Xu, Quan-Xin Shi","doi":"10.1007/s40195-024-01717-w","DOIUrl":"10.1007/s40195-024-01717-w","url":null,"abstract":"<div>The Al2O3 laminated preforms with different layers thickness were prepared by freezing casting in present work. Then, the Al2O3p/AZ91 magnesium matrix laminated materials were obtained by infiltrating the AZ91 alloy melt into the Al2O3 laminated preform based on pressure infiltration process. Subsequently, the influence of freezing temperature on the microstructure, mechanical properties and fracture behavior of magnesium-based laminates was investigated. The results indicated that with the decrease of freezing temperature, the thickness of Al2O3 layers decreases gradually, the number of layers increases obviously, and the interlayers spacing decreases. Accompanied with the decrease of interlayers spacing, the size of Mg17Al12 phase precipitated in the AZ91 alloy layers was refined, and the compression strength and strain were both improved obviously. The micro-cracks initiated in Al2O3 layers during loading process, while the AZ91 layers could effectively suppress the initiation and propagation of micro-cracks. Furthermore, the changing layers structure influenced by the decrease of freezing temperature had significant inhibiting effect on the initiation and propagation of micro-cracks, which endowed the Al2O3p/AZ91 magnesium matrix laminated materials with better strength and toughness. Notably, the best compression properties of Al2O3p/AZ91 magnesium matrix laminated materials could be obtained at the freezing temperature of − 50 °C, the compression strength and elastic modulus of which were the 160% and 250% of monolithic AZ91 alloy, respectively.</div>","PeriodicalId":457,"journal":{"name":"Acta Metallurgica Sinica-English Letters","volume":"37 11","pages":"1819 - 1829"},"PeriodicalIF":2.9,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141552569","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

Degradation Behavior of Zn–Cu Stents with Different Coatings in Sodium Chloride Solution 不同涂层的锌铜支架在氯化钠溶液中的降解行为

IF 2.9 2区材料科学

Acta Metallurgica Sinica-English Letters Pub Date : 2024-06-06 DOI: 10.1007/s40195-024-01721-0

Xingpeng Liao, Jialuo Huang, Zhilin Liu, Jingru Guo, Dajiang Zheng, Pengbo Chen, Fuyong Cao

引用次数: 0

Effect of Ca Micro-Alloying on the Microstructure and Anti-Corrosion Property of Mg0.5Zn0.2Ge Alloy 钙微合金化对 Mg0.5Zn0.2Ge 合金微观结构和抗腐蚀性能的影响

IF 2.9 2区材料科学

Acta Metallurgica Sinica-English Letters Pub Date : 2024-05-31 DOI: 10.1007/s40195-024-01703-2

Bishan Cheng, Depeng Li, Baikang Xing, Ruiqing Hou, Pingli Jiang, Shijie Zhu, Shaokang Guan

{"title":"Effect of Ca Micro-Alloying on the Microstructure and Anti-Corrosion Property of Mg0.5Zn0.2Ge Alloy","authors":"Bishan Cheng, Depeng Li, Baikang Xing, Ruiqing Hou, Pingli Jiang, Shijie Zhu, Shaokang Guan","doi":"10.1007/s40195-024-01703-2","DOIUrl":"10.1007/s40195-024-01703-2","url":null,"abstract":"<div>Magnesium and its alloys have attracting rising attention as one of biodegradable metallic materials. However, the rapid corrosion and severe localized corrosion still hinder their extensive applications in clinics. In this study, micro-alloying of Ca (≤ 0.1 wt%) into Mg0.5Zn0.2Ge alloy developed in our previous work was explored to further enhance the corrosion resistance and alleviate the localized corrosion of the alloy. The results reveal that the addition of Ca leads to the transformation of the cathodic Mg2Ge phase in Mg0.5Zn0.2Ca alloy into anodic MgCaGe phase in Ca-containing alloys, thereby changing the galvanic couples in alloys during immersion. The preferential dissolution of MgCaGe phase promotes the participation of Ca and Ge into the formation of corrosion products, resulting in the enrichment of Ca and Ge in the outmost of corrosion product layer, which stabilizes and passivates the corrosion product layer on Mg alloy surface. Additionally, the enrichment of Zn at the corrosion interface seems to further hinder the corrosion of Mg matrix. All of these factors confer a slower and more uniform corrosion on Mg0.5Zn0.2GexCa (x < 0.1 wt%) alloy, which provides favorable candidates for the further processing to gain suitable biodegradable Mg alloys.</div>","PeriodicalId":457,"journal":{"name":"Acta Metallurgica Sinica-English Letters","volume":"37 7","pages":"1147 - 1160"},"PeriodicalIF":2.9,"publicationDate":"2024-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142415351","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

Novel Soft Magnetic Co-Based Ternary Co–Er–B Bulk Metallic Glasses 新型软磁共基三元 Co-Er-B Bulk 金属玻璃

IF 2.9 2区材料科学

Acta Metallurgica Sinica-English Letters Pub Date : 2024-05-31 DOI: 10.1007/s40195-024-01722-z

Jie Lu, Yanhui Li, Shuang Ma, Wanping Li, Feng Bao, Zhengwang Zhu, Qiaoshi Zeng, Haifeng Zhang, Man Yao, Wei Zhang

{"title":"Novel Soft Magnetic Co-Based Ternary Co–Er–B Bulk Metallic Glasses","authors":"Jie Lu, Yanhui Li, Shuang Ma, Wanping Li, Feng Bao, Zhengwang Zhu, Qiaoshi Zeng, Haifeng Zhang, Man Yao, Wei Zhang","doi":"10.1007/s40195-024-01722-z","DOIUrl":"10.1007/s40195-024-01722-z","url":null,"abstract":"<div>In this work, a series of Co-based ternary Co–Er–B bulk metallic glasses (BMGs) with excellent soft magnetic properties and high strength were developed, and the local atomic structure of a typical Co71.5Er3.5B25 metallic glass was studied through in situ high-energy synchrotron X-ray diffraction and ab initio molecular dynamics simulations. The results reveal that the BMG samples can be obtained in a composition region of Co68.5–71.5Er3.5–4B25–27.5 by a conventional copper-mold casting method. The Co–Er–B metallic glasses possess stronger atomic bond strengths and denser local atomic packing structure composed of a higher fraction of icosahedral-like clusters but fewer deformed body-centered cubic and crystal-like polyhedrons, and they exhibit slower atomic diffusion behaviors during solidification, as compared to Co–Y–B counterparts. The enhancement in structural stability and the retardation of atomic-ordered diffusion lead to the better glass-forming ability of the Co–Er–B alloys. The smaller magnetic anisotropy energy in the Co–Er–B metallic glasses results in a lower coercivity of less than 1.3 A/m. The Co–Er–B BMGs exhibit high-yield strength of 3560–3969 MPa along with distinct plasticity of around 0.50%.</div>","PeriodicalId":457,"journal":{"name":"Acta Metallurgica Sinica-English Letters","volume":"37 9","pages":"1633 - 1642"},"PeriodicalIF":2.9,"publicationDate":"2024-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142415364","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

Microstructure and Mechanical Properties of the Ti62Nb12Mo12Ta12W2 Refractory High Entropy Alloy Prepared through Spark Plasma Sintering 通过火花等离子烧结制备的 Ti62Nb12Mo12Ta12W2 难熔高熵合金的显微组织和力学性能

IF 2.9 2区材料科学

Acta Metallurgica Sinica-English Letters Pub Date : 2024-05-31 DOI: 10.1007/s40195-024-01718-9

Zirui Chen, Liyuan Wang, Jiayu Zhao, Guanhua Cui, Zhuo Gao, Zhiyuan Fan, Xiaohui Shi, Junwei Qiao

{"title":"Microstructure and Mechanical Properties of the Ti62Nb12Mo12Ta12W2 Refractory High Entropy Alloy Prepared through Spark Plasma Sintering","authors":"Zirui Chen, Liyuan Wang, Jiayu Zhao, Guanhua Cui, Zhuo Gao, Zhiyuan Fan, Xiaohui Shi, Junwei Qiao","doi":"10.1007/s40195-024-01718-9","DOIUrl":"10.1007/s40195-024-01718-9","url":null,"abstract":"<div>A refractory high entropy alloy Ti62Nb12Mo12Ta12W2 was prepared by mechanical alloying and spark plasma sintering. The microstructure and mechanical properties of the Ti62Nb12Mo12Ta12W2 alloy were analyzed. The experimental results show that the microstructure of the alloy is composed of two BCC phases, an FCC precipitated phase, and the precipitated phase which is a mixture of TiC, TiN and TiO. The alloy exhibits good room temperature compressive properties. The plasticity of the sample sintered at 1550 °C can reach 10.8%, and for the sample sintered at 1600 °C, the yield strength can be up to 2032 MPa, in the meantime the plasticity is 9.4%. The alloy also shows high strength at elevated temperature. The yield strength of the alloy exceeds 420 MPa at 900 °C, and value of which is still above 200 MPa when the test temperature reaches 1000 °C. Finally, the compressive yield strength model at room temperature is constructed. The prediction error of the model ranges from − 7.9% to − 12.4%, expressing fair performance.</div>","PeriodicalId":457,"journal":{"name":"Acta Metallurgica Sinica-English Letters","volume":"37 8","pages":"1387 - 1398"},"PeriodicalIF":2.9,"publicationDate":"2024-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142415236","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 Y, Al Co-Doping on Hydrogen Storage Properties of La–Mg–Ni-Based Alloys Y、Al 共掺对 La-Mg-Ni-Based 合金储氢性能的影响

IF 2.9 2区材料科学

Acta Metallurgica Sinica-English Letters Pub Date : 2024-05-31 DOI: 10.1007/s40195-024-01709-w

Guanjiu Wu, Yichao Xie, Yuan Li, Qing Wang, Chenfeng Fan, Wenfeng Wang, Lu Zhang, Shumin Han

{"title":"Effect of Y, Al Co-Doping on Hydrogen Storage Properties of La–Mg–Ni-Based Alloys","authors":"Guanjiu Wu, Yichao Xie, Yuan Li, Qing Wang, Chenfeng Fan, Wenfeng Wang, Lu Zhang, Shumin Han","doi":"10.1007/s40195-024-01709-w","DOIUrl":"10.1007/s40195-024-01709-w","url":null,"abstract":"<div>La–Mg–Ni-based hydrogen storage alloys have excellent hydrogen storage properties. This work reports the hydrogen storage performance of a series of A2B7-type La0.96Mg0.04Ni3.34Al0.13 alloy and La0.96-xYxMg0.04Ni3.47–0.6xAl0.6x (x = 0, 0.22, 0.33, 0.44) alloys, and explores the effect of Y and Al element combined substitution on the microstructure and hydrogen storage performance of A2B7-type La–Mg–Ni-based alloys. The alloys are composed of Ce2Ni7 phase and LaNi5 phase. With the increase of x, the cell volume of Ce2Ni7 phase decreases, while that of LaNi5 phase increases, indicating that Y atom mainly enters Ce2Ni7 phase and Al atom mainly enters LaNi5 phase. An appropriate amount of co-substitution increases the hydrogen storage capacity and reduces the hydrogen absorption/desorption plateau pressure hysteresis of the alloy. When x = 0.44, the hydrogen storage capacity of the alloy is 1.449 wt%, and the hysteresis coefficient is 0.302. The cell volume of Ce2Ni7 phase and LaNi5 phase expands to different degrees after 20 absorption/desorption cycles. With the increase of x, the volume expansion rate decreases, and the cycle capacity retention rate also gradually decreases. This is related to the amorphization of Ce2Ni7 phase. When x = 0.22, the capacity retention rate of the alloy is 91.4%.</div>","PeriodicalId":457,"journal":{"name":"Acta Metallurgica Sinica-English Letters","volume":"37 8","pages":"1399 - 1410"},"PeriodicalIF":2.9,"publicationDate":"2024-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142415230","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