Balancing benefits of strength,plasticity and glass-forming ability in Co-based metallic glasses

作     者：Yimeng Zhao Xuan Li Xiaobin Liu Jiazi Bi Yang Wu Ruijuan Xiao Ran Li Tao Zhang Yimeng Zhao;Xuan Li;Xiaobin Liu;Jiazi Bi;Yang Wu;Ruijuan Xiao;Ran Li;Tao Zhang

作者机构：Key Laboratory of Aerospace Materials and Performance(Ministry of Education)School of Materials Science and EngineeringBeihang UniversityBeijing 100191China Institute of PhysicsChinese Academy of SciencesBeijing 100190China 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2021年第86卷第27期

页      面：110-116页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：supported by the National Key Research and Development Program of China(Grant No.2018YFA0703601) the National Natural Science Foundation of China(Grant Nos.51771008) Beijing Natural Science Foundation(2172034) 

主　　题：Metallic glass Glass formation Thermostability Strength Plasticity 

摘      要：Development of advanced metals materials with ultrahigh strength,large plasticity and high thermostability is one of the most attractive aims for materials ***-based bulk metallic glasses(BMGs)with the highest strength(up to 6 GPa)and special strength(up to 650 Nm/g)among all of metals materials so far we known have received extensive *** this paper,a family of Co-Ta-B-Si BMGs with high glass-transition temperature(above 870 K),large compressive plasticity(up to 6.4%)and high strength(above 5.5 GPa),and high glass-forming ability(the critical diameter,Dc:up to 4 mm)was developed by accurately tuning metalloid element contents of Si and B in the parental alloy of Co_(55)Ta_(10)B_(35).The changes of glass formation and plasticity caused by the adjustment of the constituent metalloid elements were evaluated by the combination of experimental and calculated *** reason for the significant improvement of plastic deformation is revealed by the analysis of the self-organization behaviors of high-density shear bands.