Fatigue Limit Prediction of the Matrix of 17-4PH Stainless Steel Based on Small Crack Mechanics

Autor:	Yoshiharu Mutoh, Defu Nie
Rok vydání:	2013
Předmět:	Stress (mechanics) Matrix (mathematics) Materials science Mechanics of Materials business.industry Mechanical Engineering Structural engineering Composite material Safety Risk Reliability and Quality business Fatigue limit
Zdroj:	Journal of Pressure Vessel Technology. 135
ISSN:	1528-8978 0094-9930
Popis:	The experimentally obtained fatigue limit of high strength steel is generally a value reduced by inherent flaws, and such a value does not characterize the resistance of the matrix of high strength steel to cyclic loading. To investigate the fatigue limit of the matrix, fatigue tests of 17-4PH stainless steel were performed. 17-4PH stainless steel showed a distinct dual-stage S-N curve: one stage corresponding to high stress where crack initiated at the surface and another stage corresponding to low stress where crack initiated from the subsurface inclusion (Al2O3). Based on small crack mechanics, a model was proposed to predict the fatigue limit of the matrix of 17-4PH stainless steel and its validity has been discussed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::bdfb2ba2d030ddab89308651280b1c4c https://doi.org/10.1115/1.4023428 Zobrazit plný text záznamu