摘要
利用热力学计算软件Thermo-Calc对Waspaloy合金中可能析出的平衡相以及元素含量变化对其影响进行了计算分析.结果表明:碳含量的增加可以明显地提高碳化物的析出量,但对碳化物的析出温度的影响较小;γ′的析出量和析出温度均随Al、Ti含量的增加而增加,Al的影响尤为明显;Ti是MC的主要形成元素,Ti含量的增加可以提高MC的析出量,但对其析出温度无太大影响;M23C6的析出量不受Cr含量的影响,而析出温度却随着Cr含量的增加而提高.
Equilibrium phases in Waspaloy superalloy and the effects of element content on them were studied by Thermo-Calc software. The results show that a higher C content leads to a higher content of carbides, but no obvious effects on their precipitation temperature. With the increase of Al and Ti, the precipitation content and precipitation temperature of γ＇ are raised respectively; especially Al has a more important effect. With increasing the content of Ti, the main forming element of MC, more MC can be achieved, but there is no obvious change in precipitation temperature. Cr can not change the precipitation content of M23C6, but increasing the Cr content can enhance the precipitation temperature.
出处
《北京科技大学学报》
EI
CAS
CSCD
北大核心
2008年第9期1018-1023,共6页
Journal of University of Science and Technology Beijing
基金
国家自然科学基金资助项目(No.50771011)
作者简介
洪成焱（1979-），男．博士研究生。
董建新（1965-），男，教授，博士，E-mail：jxdong@mater．usds.edu.cn
