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
相关论文
共 19 条
  • [1] ABDELHAMID AA, 1992, Z METALLKD, V83, P314
  • [2] ARNDT HH, 1960, Z METALLKD, V51, P596
  • [3] Calayag T., 1982, SOC AUTOMOTIVE ENG, V90, P40
  • [4] Chen Y, 1998, MATER SCI TECH SER, V14, P473, DOI 10.1179/026708398790301232
  • [5] EDWARD JK, 1987, ADV MATER PROCESS, V132, P51
  • [6] Grain refining of Zn-22 wt% Al superplastic alloy
    El-Baradie, ZM
    [J]. JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 1998, 84 (1-3) : 73 - 78
  • [7] HANSON D, 1925, J I MET, V34, P125
  • [8] JANECKE E, 1949, KURZGEFASSTES HDB AL, P569
  • [9] KOESTER W, 1936, Z METALLKD, V28, P363
  • [10] PHASE-TRANSFORMATIONS IN ZN-AL-CU ALLOYS
    KOVACHEVA, R
    DOBREV, R
    ZADGORSKI, S
    LILOVA, A
    [J]. MATERIALS CHARACTERIZATION, 1993, 31 (04) : 217 - 224