CREEP CRACK-GROWTH OF HK40 STEEL - MICROSTRUCTURAL EFFECTS

被引：25

作者：

ZHU, SJ

ZHAO, J

WANG, FG

机构：

[1] FUSHUN PETR INST,DEPT MECH ENGN,FUSHUN,PEOPLES R CHINA

[2] DALIAN UNIV TECHNOL,DEPT MAT ENGN,DALIAN 116024,PEOPLES R CHINA

来源：

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 1990年 / 21卷 / 08期

关键词：

D O I：

10.1007/BF02647885

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Creep crack growth tests at 871 °C have been performed on compact tension specimens of HK40 steel having different microstructures. The skeleton-shaped carbides on the grain boundaries have a higher resistance to crack growth than the blocky-shaped carbides. The secondary carbide size and distribution explicitly affect crack growth behavior. There exists a critical size of the secondary carbides. With an increase in the secondary carbide size, the resistance to crack growth increases up to the critical size and decreases beyond the critical size. © 1990 The Metallurgical of Society of AIME.

引用

页码：2237 / 2241

页数：5

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