High temperature time-dependent low cycle fatigue behaviour of a type 316L(N) stainless steel
Data(s) |
01/01/1999
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Resumo |
Total strain controlled low cycle fatigue tests on 316L(N) stainless steel have been conducted in air at various strain rates in the temperature range of 773-873 K to identify the operative time-dependent mechanisms and to understand their influence on the cyclic deformation and fracture behaviour of the alloy. The cyclic stress response at all the testing conditions was marked by an initial hardening followed by stress saturation. A negative strain rate stress response is observed under specific testing conditions which is attributed to dynamic strain ageing (DSA). Transmission electron microscopy studies reveal that there is an increase in the dislocation density and enhanced slip planarity in the DSA regime. Fatigue life is found to decrease with a decrease in strain rate. The degradation in fatigue resistance is attributed to the detrimental effects associated with DSA and oxidation. Quantitative measurement of secondary cracks indicate that both transgranular and intergranular cracking are accelerated predominantly under conditions conducive to DSA. |
Formato |
application/pdf |
Identificador |
http://eprints.iisc.ernet.in/19617/1/arti.pdf Srinivasan, VS and Valsan, M and Sandhya, R and Rao, Bhanu Sankara K and Mannan, SL and Sastry, DH (1999) High temperature time-dependent low cycle fatigue behaviour of a type 316L(N) stainless steel. In: International Journal of Fatigue, 21 (1). pp. 11-21. |
Publicador |
Elsevier Science |
Relação |
http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6V35-3V54M83-3&_user=512776&_rdoc=1&_fmt=&_orig=search&_sort=d&_docanchor=&view=c&_acct=C000025298&_version=1&_urlVersion=0&_userid=512776&md5=2ce1a950a7f7a6932f08890dc9ae4c81 http://eprints.iisc.ernet.in/19617/ |
Palavras-Chave | #Materials Engineering (formerly Metallurgy) |
Tipo |
Journal Article PeerReviewed |