Factors affecting static strain aging under stress at room temperature in a Fe-Mn-C twinning-induced plasticity steel

Motomichi Koyama; Eiji Akiyama; Kaneaki Tsuzaki

doi:10.2355/isijinternational.53.1089

Factors affecting static strain aging under stress at room temperature in a Fe-Mn-C twinning-induced plasticity steel

Motomichi Koyama, Eiji Akiyama, Kaneaki Tsuzaki

Strength of materials

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

We investigated the factors affecting static strain aging under stress in a Fe-22Mn-0.6C twinninginduced plasticity steel at room temperature. The magnitude of strengthening by the static strain aging was estimated by tensile strain holding and subsequent re-loading. Strain holding time, pre-strain, strain rate, external stress, and diffusible hydrogen content were varied to clarify their effects on static strain aging, and the present static strain aging was found to be affected by all of these factors. In this paper, we show the phenomenological laws of the relationship among the factors and the stress increase due to the static strain aging.

Original language	English
Pages (from-to)	1089-1096
Number of pages	8
Journal	isij international
Volume	53
Issue number	6
DOIs	https://doi.org/10.2355/isijinternational.53.1089
Publication status	Published - 2013

All Science Journal Classification (ASJC) codes

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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AU - Akiyama, Eiji

AU - Tsuzaki, Kaneaki

PY - 2013

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AB - We investigated the factors affecting static strain aging under stress in a Fe-22Mn-0.6C twinninginduced plasticity steel at room temperature. The magnitude of strengthening by the static strain aging was estimated by tensile strain holding and subsequent re-loading. Strain holding time, pre-strain, strain rate, external stress, and diffusible hydrogen content were varied to clarify their effects on static strain aging, and the present static strain aging was found to be affected by all of these factors. In this paper, we show the phenomenological laws of the relationship among the factors and the stress increase due to the static strain aging.

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