三种热处理制度对GH648合金组织和性能的影响

钢铁研究学报, 2007, 19(12): 45-0.

三种热处理制度对GH648合金组织和性能的影响

1.1. 北京航空航天大学材料科学与工程学院, 北京 100083；2. 钢铁研究总院高温材料研究所, 北京 100081

1.1. School of Material Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

2. 2. High Temperature Materials Research Institute, Central Iron and Steel Research Institute, Beijing 100081, China

关键词： GH648合金;热处理制度;显微组织;力学性能

Effects of Three Kinds of Heat Treatment on Microstructure and Mechanical Properties of Alloy GH648

ZHOU Yiqun , MA Huiping , JU Quan , ZHOU Tietao

Keywords： GH648 alloy;heat treatment;microstructure;mechanical properties

研究了A、B、C三种热处理制度对GH648合金组织和性能的影响。结果表明，与标准热处理制度A相比，经B、C制度处理后，GH648合金组织中的αCr相析出量增加、尺寸长大；C制度对组织中γ′相的析出也有促进作用；另外，αCr相的大量析出会导致GH648合金的冲击韧性变差。力学性能测试结果表明,C制度可使合金强度提高、塑性下降、冲击韧性急剧下降。

The effect of heat treatment A, B and C on the microstructure and mechanical properties of GH648 alloy was studied. It is suggested that ,comparing to the standard heat treatment A of GH648 alloy, the amount and size of αCr phase increased after B and C treatment, and C treatment also promoted the precipitation of γ′ phase of GH648 alloy. Furthermore, lots of precipitation of αCr phase damaged the impact energy of GH648 alloy. The experimental results showed that heat treatment C make the alloy have higher strength, lower ductility and worse impact energy. It is the disadvantage of the use of GH648 alloy.

参考文献

上一张下一张

计量

下载量()
访问量()

作者相关

文章评分

您的评分：
1

0%
2

0%
3

0%
4

0%
5

0%

材料期刊网