Creep behavior of Grade 91 steel under uniaxial and multiaxial state of stress

被引：1
|
作者：
Ren, Facai [1 ]
Tang, Xiaoying [1 ]
机构：
[1] Shanghai Inst Special Equipment Inspect & Tech Re, 915 Jinshajiang Rd, Shanghai 200062, Peoples R China
来源：
2017 3RD INTERNATIONAL CONFERENCE ON APPLIED MATERIALS AND MANUFACTURING TECHNOLOGY (ICAMMT 2017) | 2017年 / 242卷
关键词：
DEFORMATION; MECHANISMS; LIFE;
D O I：
10.1088/1757-899X/242/1/012072
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Creep rupture behavior of Grade 91 heat-resistant steel used for steam cooler under uniaxial and multiaxial state of stress was investigated. Creep tests were conducted at the temperature of 923K under the stress 125MPa. The notch root radii (r) of doubled circumferentially U-notched specimens were 0.6 and 6 mm. The creep rupture life of Grade 91 steel was found to increase with the increasing of notch acuity ratio. The creep rupture mechanism was investigated based on the SEM fractography analysis.
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页数：4
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