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个人信息Personal Information
教授
博士生导师
硕士生导师
任职 : 日本东北大学金属材料研究所 客座教授 日本城西国际 客座教授
性别：男
毕业院校：日本东北大学
学位：博士
所在单位：材料科学与工程学院
学科：材料学. 材料加工工程. 材料物理与化学
办公地点：大连理工大学材料学院
联系方式：0411-84706063 http://anam.dlut.edu.cn
电子邮箱：wzhang@dlut.edu.cn
Glass-forming ability and mechanical properties of Zr75-xNi25Alx bulk glassy alloys
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论文类型：期刊论文
发表时间：2011-02-01
发表刊物：JOURNAL OF MATERIALS RESEARCH
收录刊物：Scopus、SCIE、EI
卷号：26
期号：4
页面范围：533-538
ISSN号：0884-2914
摘要：The thermal stability, glass-forming ability (GFA), mechanical properties and Poisson's ratio of a Zr-based Zr75-xNi25Alx (x = 0 to 24) glassy alloy series have been investigated systematically. The large supercooled liquid region (Delta T-x) of over 80 K and critical sample diameter (d(c)) for glass formation above 10 mm were obtained in a composition range of x = 11 to 21. The maximum d(c) of 15 mm was formed for an off-eutectic Zr60Ni25Al15 alloy, which had the largest Delta T-x and gamma value, along with the lowest density change upon crystallization. The bulk glassy alloys exhibited high compressive yield strength (sigma(c,y)) of 1662 to 2060 MPa and distinct plastic strain (epsilon(c,p)) of 1.2 to 4.7%. With increasing Al content, the sigma(c,y) and Young's modulus linearly increased, while the epsilon(c,p) gradually decreased. The epsilon(c,p) was found to have a good correlation with the Poisson's ratio.