Effect of Annealing on Microstructure and Microhardness of Co-Fe-Ni-Ta-B-Si Bulk Metallic Glass

被引：16
|
作者：
Hitit, Aytekin [1 ]
Gecgin, Merve [2 ]
Ozturk, Pelin [1 ]
机构：
[1] Afyon Kocatepe Univ, Dept Mat Sci & Engn, TR-03200 Afyon, Turkey
[2] Anadolu Univ, Dept Mat Sci & Engn, TR-26555 Eskisehir, Turkey
来源：
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY | 2015年 / 31卷 / 02期
关键词：
Metallic glass; Annealing; Microhardness; SOFT-MAGNETIC PROPERTIES; THERMAL-STABILITY; CRYSTALLIZATION BEHAVIOR; VICKERS HARDNESS; FORMING ABILITY; ALLOYS; STRENGTH; KINETICS; MPA;
D O I：
10.1016/j.jmst.2014.09.004
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Effects of annealing temperature and time on microstructure and microhardness of Co41Ni2Fe20Ta5.5B26.5Si5 amorphous alloy have been investigated. Microhardness of the as-cast alloy is found to be 1170 HV. The maximum microhardness, 1798 HV, is achieved after annealing the amorphous alloy at 1250 K for 10 min. Examination of the microstructure reveals that (Co, Fe)(2)B, (Co, Fe)(21)Ta2B6 and (Co, Fe)(16)Ta6Si7 phases precipitate in the matrix after annealing. Intrinsic hardness and Hall-Petch coefficients of the precipitates indicate that high hardness values result from precipitation of (Co, Fe)(2)B and (Co, Fe)(21)Ta2B6 phases. It is also observed that increasing the annealing time results in the decrease in microhardness values because of the increase in particle sizes of the precipitates.
引用
收藏
页码：148 / 152
页数：5
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