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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
New soft magnetic Fe25Co25Ni25(P, C, B)(25) high entropy bulk metallic glasses with large supercooled liquid region
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论文类型：期刊论文
发表时间：2017-02-05
发表刊物：JOURNAL OF ALLOYS AND COMPOUNDS
收录刊物：SCIE、EI
卷号：693
页面范围：25-31
ISSN号：0925-8388
关键字：High-entropy alloys; Bulk metallic glasses; Supercooled liquid region; Magnetic properties; Mechanical properties
摘要：New Fe25Co25Ni25(P, C, B)(25) high entropy bulk metallic glasses (HE-BMGs) with large supercooled liquid region (Delta Tx) and excellent soft magnetic and mechanical properties were developed. Fully HE-BMG rods were successfully prepared by copper mold casting in the composition region of 7.5-12.5 at% P, 7.5-10 at % C, and 5-10 at% B, respectively. The HE-BMGs possess low glass transition temperature (T-g) of similar to 672 K and large Delta T-x of similar to 56 K, which are comparable to those of Zr-based BMGs, whereas exhibit much higher yield strength of similar to 3210 MPa with distinct plasticity. The alloys also show low coercivity of similar to 1.2 A/m and high saturation magnetization of similar to 0.86 T. The mechanism of good stability of the supercooled liquid and the correlation between strength and T-g for the HE-BMGs were discussed. (C) 2016 Elsevier B.V. All rights reserved.