Influence of heat treatment on microstructure of Ni3Al based single crystal superalloy

被引:2
|
作者
Cheng, A. [1 ]
Tiantian, Z. [1 ]
Meiqiong, O. [1 ]
Heng, Z. [1 ]
Lei, L. [1 ]
Shusuo, L. [1 ]
Shengkai, G. [1 ]
机构
[1] Beijing Univ Aeronaut & Astronaut, Sch Mat Sci & Engn, Beijing 100191, Peoples R China
基金
中国国家自然科学基金;
关键词
Ni3Al based single crystal superalloy; Solution treatment; Age treatment; Microstructure; STRESS RUPTURE PROPERTIES; SOLIDIFICATION; 3RD-GENERATION; EVOLUTION; BEHAVIOR; IC6SX; SIZE;
D O I
10.1179/1432891714Z.000000000831
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The effect of heat treatment (solution and age treatment) on Ni3Al based single crystal superalloy was investigated in this study. The solution temperatures of the experimental alloy were 1315-1335 degrees C, 1320-1340 degrees C and 1325-1345 degrees C, and all the solution treatments could eliminate dendritic microsegregation in the occurrence of incipient melting. The primary age temperatures and times range was 1100-1130 degrees C and 1-4 h, while the secondary age times were 16-40 h at 870 degrees C. There was a comprehensive consideration of microstructure, actual working status of tube furnace and cost factor, and the optimum heat treatment was 1320-1340 degrees C/16 h, air cooling (AC)+1120 degrees C/3 h, AC+870 degrees C/32 h, AC.
引用
收藏
页码:309 / 314
页数:6
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