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- Title
The Effect of Tailored Deformation on Fatigue Strength of Austenitic 316L Stainless Steel.
- Authors
Zhang, Meng Xiao; Pang, Jian Chao; Li, Shou Xin; Zhang, Zhen Jun; Zhang, Zhe Feng
- Abstract
Fatigue failure is one of major problems of the structural components under cyclic loading; however the fatigue test is a time‐consuming and high‐cost process. Therefore, it is better to establish the relationship between the fatigue property and static mechanical properties of materials. The present studies mainly focus on the relationship between fatigue strength and tensile strength of 316L austenitic stainless steel prepared with four different technologies. The rolling results in severe plastic deformation; dislocation multiplication occurs inside the grains, and the elongated grains are parallel to the rolling direction. With the tensile strength increasing, the optimum fatigue strength reaches at an appropriate tensile strength. The fatigue strength is controlled by the tensile strength and the ability of work hardening, and based on this analysis a new method is established to estimate the fatigue strength. The competitive mechanism between fatigue crack initiation and propagation is also proposed to account for the different shapes of S‐N curves. Based on the analysis of the relationship between tensile strength and fatigue strength, it is found that fatigue strength is controlled by the combined effect of tensile strength and the ability of work hardening. And a new method is proposed to predict the fatigue strength of material in this study.
- Subjects
STAINLESS steel; MECHANICAL behavior of materials; REACTION mechanisms (Chemistry)
- Publication
Advanced Engineering Materials, 2018, Vol 20, Issue 11, pN.PAG
- ISSN
1438-1656
- Publication type
Article
- DOI
10.1002/adem.201800554