Low cycle fatigue and creep-fatigue interaction behaviour of 316L(N) stainless steel and its welds

Autor:	M. Valsan, A. Nagesha
Rok vydání:	2010
Předmět:	Materials science Brittleness Creep Ferrite (iron) Metallurgy technology industry and agriculture engineering Deformation (engineering) Strain rate Austenitic stainless steel engineering.material Intergranular corrosion Ductility
Zdroj:	Transactions of the Indian Institute of Metals. 63:209-215
ISSN:	0975-1645 0972-2815
DOI:	10.1007/s12666-010-0029-6
Popis:	High temperature low cycle fatigue (LCF) is influenced by various time dependent processes such as creep, oxidation, phase transformations and dynamic strain ageing (DSA) depending on test conditions of strain rate and temperature. In this paper the detrimental effects of DSA and oxidation in high temperature LCF are discussed with reference to extensive studies on 316L(N) stainless steel. DSA has been found to enhance the stress response and reduce ductility. It localizes fatigue deformation, enhances fatigue cracking and reduces fatigue life. High temperature oxidation accelerates transgranular and intergranular fatigue cracking during long hold time tests in austenitic stainless steel. In welds, microstructural features such as presence of coarse grains and formation of brittle phases due to transformation of δ ferrite during testing influence crack initiation, propagation and fatigue life.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::230db08f1eedaee9e0bcdbba0a806b11 https://doi.org/10.1007/s12666-010-0029-6 Zobrazit plný text záznamu Full text from SpringerLink