Creep-fatigue interaction behaviour of a 15Cr-15Ni, Ti modified austenitic stainless steel as a function of Ti/C ratio and microstructure

被引：14
作者：
Sandhya, R [1 ]
Rao, KBS [1 ]
Mannan, SL [1 ]
机构：
[1] Indira Gandhi Ctr Atom Res, Mat Dev Grp, Kalpakkam 603102, Tamil Nadu, India
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2005年 / 392卷 / 1-2期
关键词：
Ti modified stainless steel; creep-fatigue interaction; low cycle fatigue; microstructure; precipitation; cold work;
D O I：
10.1016/j.msea.2004.09.040
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The creep-fatigue interaction behaviour of a 15Cr-15Ni, Ti modified austenitic stainless steel has been characterized as a function of Ti/C ratio and microstructure. Creep-fatigue interaction behaviour has been investigated in this material, by introducing hold times with durations ranging from 1 to 10 min at peak tensile strain. The material was tested at 923 K in Ti/C ratios of 4 and 8 and in the solution annealed, cold worked and aged conditions. It has been ascertained that precipitation controls creep-fatigue interaction properties in this alloy. Carbides which precipitate on the grain boundaries in the solution annealed material are found to be beneficial to creep-fatigue interaction properties, while fine titanium carbides which precipitate in the matrix in cold worked and aged conditions of the alloy, have been found detrimental to creep-fatigue interaction properties. (C) 2004 Elsevier B.V. All rights reserved.
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页码：326 / 334
页数：9
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