Acta Metallurgica Sinica-English Letters最新文献_第6页

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":null,"pages":null},"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":null,"pages":null},"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":null,"pages":null},"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":null,"pages":null},"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

Mechanical Properties and Microstructure of the Shear Band Formed at Cryogenic Temperature in the NiCrFe Medium-Entropy Alloy 镍铬铁中熵合金在低温下形成的剪切带的力学性能和微观结构

IF 2.9 2区材料科学

Acta Metallurgica Sinica-English Letters Pub Date : 2024-05-31 DOI: 10.1007/s40195-024-01720-1

Ruoyu Liu, Wenshu Li, Xiayang Yu, Lanyi Liu, Bingfeng Wang

{"title":"Mechanical Properties and Microstructure of the Shear Band Formed at Cryogenic Temperature in the NiCrFe Medium-Entropy Alloy","authors":"Ruoyu Liu, Wenshu Li, Xiayang Yu, Lanyi Liu, Bingfeng Wang","doi":"10.1007/s40195-024-01720-1","DOIUrl":"10.1007/s40195-024-01720-1","url":null,"abstract":"<div>There are nanotwins in the shear band formed in a moment (about 10−5 s) in some NiCrFe-based medium-entropy alloys (MEAs), and these shear bands can be recognized as a special kind of materials due to their high strength and good plasticity. In this study, the single shear band of the NiCrFe MEA was prepared at 77 K. A series of characterizations were carried out to analyze the microstructures in the shear band. The strength of the shear band was investigated by the split Hopkinson pressure bar and in-situ compression. The micropillar in the shear band containing nanotwins exhibits excellent strength-plasticity synergy. The compressive yield strength of the shear band measured by in-situ compression is 175% higher than that of the matrix, reaching 1405 MPa, with the fracture strain exceeding 0.5. The strengthening mechanism of the shear band was revealed by the combination of the experimental results and molecular dynamics simulation. The synergistic effect of multiple strengthening mechanisms enhances the strength of the NiCrFe MEA containing nanotwins, in which the grain boundary strengthening of the ultrafine equiaxed grains and the dynamic Hall–Petch effect of the nanotwins dominate. In addition, the good plasticity of the shear band is ascribed to the stress concentration reduction of the twin boundaries of nanotwins and the activation of multiple slip systems due to the randomly oriented nanotwins. These findings provide theoretical guidance for the design of nanotwinned MEAs to realize excellent strength-plasticity synergy for structural materials.</div>","PeriodicalId":457,"journal":{"name":"Acta Metallurgica Sinica-English Letters","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2024-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142415229","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

A Novel Approach for Rapid Evaluating Cavitation Erosion Resistance of Metallic Materials 快速评估金属材料抗气蚀性能的新方法

IF 2.9 2区材料科学

Acta Metallurgica Sinica-English Letters Pub Date : 2024-05-17 DOI: 10.1007/s40195-024-01710-3

Yu Li, Zhenbo Qin, Xiaoyang Du, Da-Hai Xia, Zepeng Gao, Yiwen Zhang, Zhong Wu, Wenbin Hu

引用次数: 0

Microstructure and Mechanical Property of Mg-13Gd-0.2Ni Alloy Processed by Extrusion and Aging 通过挤压和时效处理的 Mg-13Gd-0.2Ni 合金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 : 2024-05-17 DOI: 10.1007/s40195-024-01712-1

Hang Zhang, Jiaying Zhao, Rongguang Li, Boshu Liu, Shanshan Li, Sha Sha, Yuehong Zhang, Man Xu, Yan Tang

{"title":"Microstructure and Mechanical Property of Mg-13Gd-0.2Ni Alloy Processed by Extrusion and Aging","authors":"Hang Zhang, Jiaying Zhao, Rongguang Li, Boshu Liu, Shanshan Li, Sha Sha, Yuehong Zhang, Man Xu, Yan Tang","doi":"10.1007/s40195-024-01712-1","DOIUrl":"10.1007/s40195-024-01712-1","url":null,"abstract":"<div>In this work, a good combination of strength and ductility is achieved in a Mg-13Gd-0.2Ni alloy by conventional extrusion and following aging treatment. The aged Mg-13Gd-0.2Ni alloy exhibits a yield strength (YS) of 363 MPa, an ultimate tensile strength (UTS) of 433 MPa, and an elongation of 11.9%. The aged Mg-13Gd-0.2Ni alloy contains a microstructure with a 95% proportion of dynamically recrystallized (DRXed) grains with a micron size, weak texture, and a high number density of prismatic β′ precipitates within grains. The bulk compounds enriched with Ni element which are mainly formed during casting and stable in the extruded and aged samples. Few dynamic compounds are formed during extrusion, and a high density of prismatic β′ precipitates are formed during aging. The high density of prismatic β′ precipitates results in a significant increase in the strength of the Mg-13Gd-0.2Ni alloy, and the YS and UTS are increased by 153 and 136 MPa, respectively. The high proportion of DRXed grains with a weak texture contributes mainly to the high ductility and the fine compounds with a low density at grain boundaries formed during aging have no significant adverse effect on ductility of the aged Mg-13Gd-0.2Ni alloy. These findings for the novel Mg-Gd-Ni alloy can provide guidance for the design of wrought Mg alloys with superior mechanical properties.</div>","PeriodicalId":457,"journal":{"name":"Acta Metallurgica Sinica-English Letters","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2024-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140964423","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

Corrosion Behavior of Pre-oxidized GH4169 Alloy with Solid NaCl Deposited in a Wet Oxygen Flow at 600 °C 在 600 °C 湿氧气流中沉积固体氯化钠的预氧化 GH4169 合金的腐蚀行为

IF 2.9 2区材料科学

Acta Metallurgica Sinica-English Letters Pub Date : 2024-05-06 DOI: 10.1007/s40195-024-01699-9

Weidong Zhang, Yu Cui, Li Liu, Wenquan Wang, Wenzheng Chen, Rui Li, Fuhui Wang

引用次数: 0

Microstructure Modification and Ductility Improvement for TaMoNbZrTiAl Refractory High Entropy Alloys via Increasing Ti Content 通过增加钛含量改变 TaMoNbZrTiAl 难熔高熵合金的微观结构并提高其延展性

IF 2.9 2区材料科学

Acta Metallurgica Sinica-English Letters Pub Date : 2024-05-06 DOI: 10.1007/s40195-024-01707-y

Yujing Zhou, Siyi Peng, Yueling Guo, Xiaoxiang Wu, Changmeng Liu, Zhiming Li

{"title":"Microstructure Modification and Ductility Improvement for TaMoNbZrTiAl Refractory High Entropy Alloys via Increasing Ti Content","authors":"Yujing Zhou, Siyi Peng, Yueling Guo, Xiaoxiang Wu, Changmeng Liu, Zhiming Li","doi":"10.1007/s40195-024-01707-y","DOIUrl":"10.1007/s40195-024-01707-y","url":null,"abstract":"<div>Here, the composition of TaMoNbZrTiAl refractory high entropy alloy (RHEA) is optimized by increasing Ti content to improve its mechanical property especially the ductility, through comparing two RHEAs with different Ti content. The RHEAs contain two body-centered-cubic (BCC) phases. The BCC phase in the dendritic region is rich in Ta, Mo and Nb, and the BCC phase in the interdendritic region is enriched in Zr, Ti and Al. The as-cast RHEA with a higher Ti content remains dendritic microstructures, and Ti is mainly enriched in the interdendritic region. After annealing treatment at 1300 °C for 48 h, the dendritic microstructures change into equiaxed-grain morphology, accompanied by needle-like micron precipitates at grain boundaries in the RHEA with higher Ti content. For the as-cast RHEAs, the fracture strain increases by ~ 6.6% and the uniform plastic strain increases by ~ 5.9% at the compression test due to the increase of Ti content. Our work offers a reference for the composition design of RHEAs and makes a preliminary exploration of the optimization of the microstructures and mechanical properties.</div>","PeriodicalId":457,"journal":{"name":"Acta Metallurgica Sinica-English Letters","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2024-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140887523","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

Exfoliation Corrosion of As-Extruded Mg–1Li–1Ca: the Influence of the Superficial Layer 挤压成型的 Mg-1Li-1Ca 的剥落腐蚀：表层的影响

IF 2.9 2区材料科学

Acta Metallurgica Sinica-English Letters Pub Date : 2024-05-06 DOI: 10.1007/s40195-024-01708-x

Ze-Song Wei, Zi-You Ding, Lei Cai, Shao-Xia Ma, Dong-Qing Zhao, Lan-Yue Cui, Cheng-Bao Liu, Yuan-Sheng Yang, Yuan-Ding Huang, Rong-Chang Zeng

{"title":"Exfoliation Corrosion of As-Extruded Mg–1Li–1Ca: the Influence of the Superficial Layer","authors":"Ze-Song Wei, Zi-You Ding, Lei Cai, Shao-Xia Ma, Dong-Qing Zhao, Lan-Yue Cui, Cheng-Bao Liu, Yuan-Sheng Yang, Yuan-Ding Huang, Rong-Chang Zeng","doi":"10.1007/s40195-024-01708-x","DOIUrl":"10.1007/s40195-024-01708-x","url":null,"abstract":"<div>Exfoliation corrosion (EFC) has rarely been reported for wrought magnesium alloys. Enhanced EFC of the as-extruded Mg–1Li–1Ca alloy was observed after the removal of outermost fine-grained skins. The microstructure and corrosion products were investigated using optical microscopy, scanning electron microscopy, electron backscattered diffraction, X-ray diffraction, and Fourier transform infrared spectrometry. The corrosion behavior was analyzed using electrochemical polarization, electrochemical impedance spectroscopy, and scanning Kelvin probe techniques. The results indicated that the surface of Mg–1Li–1Ca, with the superficial layer removed, was more susceptible to EFC. A linear correlation between grain boundary density and corrosion resistance was established. Additionally, the influence of factors such as grain size, intermetallic compounds, different alloy surfaces, and corrosion products on EFC were discussed, and the corresponding EFC mechanism was clarified.</div>","PeriodicalId":457,"journal":{"name":"Acta Metallurgica Sinica-English Letters","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2024-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140887796","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