Creep rupture behavior of Grade 91 steel

被引：101

作者：

Shrestha, Triratna ^{[1
]}

Basirat, Mehdi ^{[2
]}

Charit, Indrajit ^{[1
]}

Potirniche, Gabriel P. ^{[2
]}

Rink, Karl K. ^{[2
]}

机构：

[1] Univ Idaho, Dept Chem & Mat Engn, Moscow, ID 83844 USA

[2] Univ Idaho, Dept Mech Engn, Moscow, ID 83844 USA

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2013年 / 565卷

关键词：

Grade; 91; steel; Creep rupture; Fractography; Creep life prediction; Fracture mechanism map; MODIFIED 9CR-1MO STEEL; LONG-TERM CREEP; FRACTURE-MECHANISM MAPS; FERRITIC STEEL; STRUCTURAL-MATERIALS; NUCLEAR-REACTORS; CHROMIUM STEELS; POWER-PLANT; DEFORMATION; STRESS;

D O I：

10.1016/j.msea.2012.12.031

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Grade 91 steel is considered a potential structural material for advanced nuclear reactors. The creep deformation behavior of Grade 91 steel was studied in the temperature range of 600-700 degrees C and at stresses of 35-350 MPa. The data were analyzed in terms of Monkman-Grant relation and Larson-Miller parameter. Creep damage tolerance factor and stress exponent were used to identify the cause of creep damage. The fracture surface morphology of the ruptured specimens was studied by scanning electron microscopy to elucidate the failure mechanisms. Fracture mechanism map for Grade 91 steel was developed based on the available material parameters and experimental observations. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：382 / 391

页数：10

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