Effect of Normalization Heat Treatment on Creep and Tensile Properties of Modified 9Cr-1Mo Steel

被引：9
|
作者：
Selvi, S. Panneer [1 ]
Sakthivel, T. [1 ]
Parameswaran, P. [1 ]
Laha, K. [1 ]
机构：
[1] Indira Gandhi Ctr Atom Res, Met & Mat Grp, Kalpakkam 603102, Tamil Nadu, India
来源：
TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS | 2016年 / 69卷 / 02期
关键词：
Grade 91 ferritic steel; Heat treatment; Creep; Tensile; MECHANICAL-PROPERTIES; TOUGHNESS; REFINEMENT; BEHAVIOR; IMPACT;
D O I：
10.1007/s12666-015-0816-1
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Creep and tensile properties have been investigated on modified 9Cr-1Mo steel subjected to single and double normalization heat treatments. Optical, scanning and transmission electron microscopic investigations revealed the presence of finer prior austenite grain size and coarsening of MX precipitates in the double normalized steel as compared to the steel subjected to single normalization heat treatment. Increased minimum creep rate and significant reduction in creep rupture life were observed in the double normalized steel. Increased tensile ductility coupled with marginal decrease in tensile strength was observed with double normalized steel compared to single normalized steel. The double normalized steel exhibited lower creep strength and higher tensile ductility than the single normalized steel.
引用
收藏
页码：261 / 269
页数：9
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