DEGRADATION OF MCRALY COATING AND SUBSTRATE SUPERALLOY DURING LONG-TERM THERMAL EXPOSURE

被引：22

作者：

SRINIVASAN, V ^{[1
]}

CHERUVU, NS ^{[1
]}

CARR, TJ ^{[1
]}

OBRIEN, CM ^{[1
]}

机构：

[1] WESTINGHOUSE ELECT CORP,PGBU,ORLANDO,FL 32826

来源：

MATERIALS AND MANUFACTURING PROCESSES | 1995年 / 10卷 / 05期

关键词：

D O I：

10.1080/10426919508935082

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Reliability and service life of hot gas path components of a gas turbine are limited by the degree of coating and substrate material degradation that occurs during service. MCrAlY type coatings and Ni-base alloys are widely used in the industry. In this study, the effect of long term thermal exposure with and without stress an a blade material, U520 and on a MCrAlY coating has been investigated. Microstructural degradation of coating and U520 material are presented as a function of time, temperature and stress. These results are compared with the degradation observed in service-exposed blades.

引用

页码：955 / 969

页数：15