Creep Strength of High Chromium Steel with Ferrite Matrix

被引：0
|
作者：
Kimura, K. [1 ]
Toda, Y. [1 ]
Kushima, H. [1 ]
Sawada, K. [1 ]
机构：
[1] Natl Inst Mat Sci, Mat Data Sheet Stn, Tsukuba, Ibaraki 3050047, Japan
来源：
CREEP & FRACTURE IN HIGH TEMPERATURE COMPONENTS: DESIGN & LIFE ASSESSMENT ISSUES, PROCEEDINGS | 2009年
关键词：
LONG-TERM CREEP; HEAT-RESISTANT STEELS; NI;
D O I：
暂无
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Long-term creep strength of material in the low stress regime below elastic limit is difficult to predict by an extrapolation of short-term creep strength in the high stress regime above elastic limit. Long-term creep strength of fully annealed ferrite-pearlite microstructure of low alloy Cr-Mo steel is higher than that of martensite and bainite microstructures. It is explained by lower dislocation density of fully annealed microstructure. According to the above concept, creep strength of high chromium steel with ferrite matrix is investigated. Creep rupture life of 15Cr-Mo-W-Co steel with ferrite matrix which is longer than that of ASME Grade 92 steel is obtained at 650 degrees C by controlling the chemical composition and heat treatment condition.
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页码：935 / +
页数：3
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