Temperature effect on the low-cycle fatigue behavior of type 316L stainless steel: Cyclic non-stabilization and an invariable fatigue parameter

Seong Gu Hong; Soon Bok Lee; Thak Sang Byun

doi:10.1016/j.msea.2006.12.035

Temperature effect on the low-cycle fatigue behavior of type 316L stainless steel: Cyclic non-stabilization and an invariable fatigue parameter

Seong Gu Hong, Soon Bok Lee, Thak Sang Byun

Radiation Effects and Microstructural An

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Abstract

The temperature effect on the cyclic non-stabilization of cold-worked 316L stainless steel during low-cycle fatigue deformation was investigated. The material underwent additional cyclic hardening at room temperature and in the temperature range of 250-600 °C; the hardening at room temperature came from plasticity-induced martensite transformation and the hardening in the temperature range of 250-600 °C was attributed to dynamic strain aging. These hardening mechanisms competed with the cyclic softening induced by dynamic recovery, which is generally predominant in cold-worked materials, and this led to the cyclic non-stabilization of the material. Three fatigue parameters: the stress amplitude, plastic strain amplitude and plastic strain energy density, were evaluated to find an invariable fatigue parameter. The results revealed that the plastic strain energy density was stabilized at the early stage of fatigue life and nearly invariant through the entire life.

Original language	English
Pages (from-to)	139-147
Number of pages	9
Journal	Materials Science and Engineering: A
Volume	457
Issue number	1-2
DOIs	https://doi.org/10.1016/j.msea.2006.12.035
State	Published - May 25 2007

Funding

This work was supported by Ministry of Science and Technology in Korea through “Development of Reliability Design Technique and Life Prediction Model for Electronic Components”, and the Korea Research Foundation Grant funded by Korea Government (MOEHRD, Basic Research Promotion Fund) (No. M01-2005-000-10267-0). This study was also sponsored by the Offices of Fusion Energy Sciences, U.S. Department of Energy, under Contract DE-AC05-00OR22725 with UT-Battelle, LLC. The authors express special thanks to Drs. S.J. Zinkle, M. Grossbeck, and M. Li for their technical reviews and thoughtful comments.

Funders	Funder number
Basic Research Promotion Fund	M01-2005-000-10267-0
Korea Government
U.S. Department of Energy	DE-AC05-00OR22725
Fusion Energy Sciences
National Research Foundation of Korea
Ministry of Education, Science and Technology
Ministry of Education and Human Resources Development

Keywords

316L stainless steel
Cyclic non-stabilization
Dynamic recovery
Dynamic strain aging
Fatigue parameter
Plasticity-induced martensite transformation

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10.1016/j.msea.2006.12.035

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abstract = "The temperature effect on the cyclic non-stabilization of cold-worked 316L stainless steel during low-cycle fatigue deformation was investigated. The material underwent additional cyclic hardening at room temperature and in the temperature range of 250-600 °C; the hardening at room temperature came from plasticity-induced martensite transformation and the hardening in the temperature range of 250-600 °C was attributed to dynamic strain aging. These hardening mechanisms competed with the cyclic softening induced by dynamic recovery, which is generally predominant in cold-worked materials, and this led to the cyclic non-stabilization of the material. Three fatigue parameters: the stress amplitude, plastic strain amplitude and plastic strain energy density, were evaluated to find an invariable fatigue parameter. The results revealed that the plastic strain energy density was stabilized at the early stage of fatigue life and nearly invariant through the entire life.",

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PY - 2007/5/25

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N2 - The temperature effect on the cyclic non-stabilization of cold-worked 316L stainless steel during low-cycle fatigue deformation was investigated. The material underwent additional cyclic hardening at room temperature and in the temperature range of 250-600 °C; the hardening at room temperature came from plasticity-induced martensite transformation and the hardening in the temperature range of 250-600 °C was attributed to dynamic strain aging. These hardening mechanisms competed with the cyclic softening induced by dynamic recovery, which is generally predominant in cold-worked materials, and this led to the cyclic non-stabilization of the material. Three fatigue parameters: the stress amplitude, plastic strain amplitude and plastic strain energy density, were evaluated to find an invariable fatigue parameter. The results revealed that the plastic strain energy density was stabilized at the early stage of fatigue life and nearly invariant through the entire life.

AB - The temperature effect on the cyclic non-stabilization of cold-worked 316L stainless steel during low-cycle fatigue deformation was investigated. The material underwent additional cyclic hardening at room temperature and in the temperature range of 250-600 °C; the hardening at room temperature came from plasticity-induced martensite transformation and the hardening in the temperature range of 250-600 °C was attributed to dynamic strain aging. These hardening mechanisms competed with the cyclic softening induced by dynamic recovery, which is generally predominant in cold-worked materials, and this led to the cyclic non-stabilization of the material. Three fatigue parameters: the stress amplitude, plastic strain amplitude and plastic strain energy density, were evaluated to find an invariable fatigue parameter. The results revealed that the plastic strain energy density was stabilized at the early stage of fatigue life and nearly invariant through the entire life.

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Temperature effect on the low-cycle fatigue behavior of type 316L stainless steel: Cyclic non-stabilization and an invariable fatigue parameter

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