中國有色金屬學(xué)報(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 7 No. 3 September 1997 |
EFFECT OF MELT SUPERHEATING ON MICROSTRUCTURE AND MECHANICAL PROPERTIES OF A357 ALLOY
Li Peiyong1,2 ; Jia Jun1; Guo Jingjie1; Li Peijie1; Shao Gaoliang1
（1.School of Materials Science and Engineering; Harbin Institute of Technology; Harbin 150001 ;
2.Beijing Research Institute of Aeronautical Materials; Beijing 100095）
Abstract:The effect of superheating from 750 to 1 000 ℃ on A357 alloy were investigated. The results show that there exist three characteristic temperature ranges: 750～800 ℃, 800～ 900 ℃ and 900～ 1 000 ℃, which are correspondent to the variations of chemical composition, microstructure and mechanical properties. When A357 alloy superheated from 750 to 800 ℃, most of its mechanical properties are remarkably improved.
Key words: melt superheating microstructure mechanical property A357 alloy
