The brittle fracture of 475 degrees C embrittled cast duplex stainless steel

被引：2
|
作者：
Marrow, TJ [1 ]
Bury, N [1 ]
机构：
[1] UMIST,MANCHESTER M1 7HS,LANCS,ENGLAND
来源：
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES | 1997年 / 20卷 / 04期
关键词：
duplex stainless steel; 475 degrees C embrittlement; deformation twinning; brittle-to-ductile transition; age hardening;
D O I：
10.1111/j.1460-2695.1997.tb00288.x
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The fracture behaviour of cast duplex stainless steels, heat treated to different ferrite contents and hardness was investigated using tensile and notched bend tests. The purpose was to identify the microstructural features which controlled the ductile-to-brittle fracture transition of 475 degrees C embrittled duplex stainless steel. The results indicate that twin nucleated cleavage has a tensile stress fracture criteria and the brittle-to-ductile transition temperature depends on ferrite microhardness, ferrite grain size and constraint.
引用
收藏
页码：565 / 571
页数：7
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