Fatigue Limit Prediction of the Matrix of 17-4PH Stainless Steel Based on Small Crack Mechanics-Reference-Cited by-同舟云学术

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

Published:2013-03-18 Issue:2 Volume:135 Page:
ISSN:0094-9930
Container-title:Journal of Pressure Vessel Technology
language:en
Short-container-title:

Author:

Nie Defu¹,Mutoh Yoshiharu²

Affiliation:

1. National Technology Research Center on PVP Safety Engineering, (Hefei General Machinery Research Institute), Hefei, Anhui, 230031China e-mail:

2. Nagaoka University of Technology, Nagaoka, Niigata 940-2188, Japan e-mail:

Abstract

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.

Publisher

ASME International

Subject

Mechanical Engineering,Mechanics of Materials,Safety, Risk, Reliability and Quality

Link

http://asmedigitalcollection.asme.org/pressurevesseltech/article-pdf/doi/10.1115/1.4023428/6311989/pvt_135_2_021407.pdf

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