Creep ductility evaluation of low alloy steels used for steam turbine components

被引：0
|
作者：
Kulvir Singh
M. Kamaraj
机构：
[1] Corporate R&D,Metallurgy Department
[2] BHEL,Metallurgical and Materials Engg Dept
[3] IIT Madras,undefined
来源：
Transactions of the Indian Institute of Metals | 2010年 / 63卷
关键词：
creep; ductility; low alloy steels; aging; microstructure; minimum creep rate;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
1Cr1Mo¼V low alloy forging and casing steels exhibited considerable secondary and tertiary stages in the creep tests conducted in the temperature range between 773 and 873 K. The primary stage, though present, was rather negligible at higher temperature ranges. Casting steel showed wedge type cavities which grew as cracks along the grain boundaries. In the case of forging steel, the voids were elliptical and flat which developed during the tertiary stage of creep deformation. Tertiary creep deformation and creep ductility of the two steels investigated have been analysed based on the type of voids developed during the tertiary stage.
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页码：391 / 395
页数：4
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