Microstructure and mechanical properties of undercooled Fe80C5Si10B5 eutectic alloy

被引：18

作者：

Chen, Z. ^{[1
]}

Zhang, Y. ^{[1
]}

Wang, S. ^{[1
]}

Zhang, J. Y. ^{[1
]}

Tao, Q. ^{[1
]}

Zhang, P. ^{[1
]}

机构：

[1] China Univ Min & Technol, Sch Mat Sci & Engn, Xuzhou 221116, Jiangsu, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2018年 / 747卷

关键词：

Undercooled solidification; Fe80C5Si10B5; alloy; Irregular eutectic; Hardness; Friction and wear; RAPID SOLIDIFICATION; NONEQUILIBRIUM SOLIDIFICATION; B ALLOYS; GROWTH; SI; LAMELLAR;

D O I：

10.1016/j.jallcom.2018.03.065

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The Fe80C5Si10B5 alloy was investigated by means of fluxing and cyclic superheating. The microstructure of low undercooling range was quasi regular eutectic and complex rules eutectic; The structure of moderate undercooling corresponded to mixed eutectic and irregular eutectic; High undercooling resulted in the granular ferrite and irregular eutectic borides. There were two grain refinement processes within achieved undercoolings. The first grain refinement of irregular eutectic was related to oscillatory instability under non-equilibrium condition. The second grain refinement at large undercooling was caused by stress accumulation and break-up originating from the rapid solidification. With the increase of undercooling, the relationship between the microstructure and hardness including the size effect of crystal grain was systematically investigated. Meanwhile, the friction and wear performance of undercooled Fe80C5Si10B5 alloy was studied. (C) 2018 Elsevier B.V. All rights reserved.

引用

页码：846 / 853

页数：8

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