Evolution of as-cast and heat-treated microstructure of a commercial bearing alloy

被引：18
|
作者：
Choudhury, P [1 ]
Das, K [1 ]
Das, S [1 ]
机构：
[1] Indian Inst Technol, Dept Met & Mat Engn, Kharagpur 721302, W Bengal, India
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2005年 / 398卷 / 1-2期
关键词：
ZA27; dendrite structure; bearing allloy;
D O I：
10.1016/j.msea.2005.03.098
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The present study involves the microstructural changes of a zinc-aluminium alloy (ZA27) by nickel, a high melting point element, and the commercial master alloys, Al-5Ti-1B and Al-5Sr. The evolution of as-cast microstructure and the effect of heat treatment on the as-cast microstructure and hardness have been presented in detail. The addition of Ti, B and Sr as master alloys results in significant refinement in the dendrite structure of the ZA27 alloy. The addition of Ni to ZA27-based alloy results in the formation of Ni-alummides as rod as well as blocky-shaped particles. High amount of Ni (2 wt.%) refines the dendritic structure significantly. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：332 / 343
页数：12
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