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Influence of Secondary Cyclic Hardening on the Low Cycle Fatigue Behavior of Nitrogen Alloyed 316LN Stainless Steel |
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| Authors: | G V Prasad Reddy R Sandhya M D Mathew S Sankaran |
| Affiliation: | 1. Fatigue Studies Section, Indira Gandhi Center for Atomic Research, Kalpakkam, 603102, India 2. Mechanical Metallurgy Division, Indira Gandhi Center for Atomic Research, Kalpakkam, 603102, India 3. Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai, 600036, India |
| Abstract: | In this article, the occurrence of secondary cyclic hardening (SCH) and its effect on high-temperature cyclic deformation and fatigue life of 316LN Stainless steel are presented. SCH is found to result from planar slip mode of deformation and enhance the degree of hardening over and above that resulted from dynamic strain aging. The occurrence of SCH is strongly governed by the applied strain amplitude, test temperature, and the nitrogen content in the 316LN SS. Under certain test conditions, SCH is noticed to decrease the low cycle fatigue life with the increasing nitrogen content. |
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