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Effects of deformation strain and aging temperature on strain aging behavior in a 304 stainless steel

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Abstract

The effects of deformation strain and aging temperature on strain aging behavior in a 304 stainless steel were investigated. Age hardening of a cold-rolled 304 stainless steel was significantly influenced by the amount of α′-martensite as well as aging temperature. The similar variation of tensile strength to the amount of α′-martensite with aging temperature indicated that tensile strength of an aged steel is significantly influenced by the amount of α′-martensite formed during cold deformation. The increase of strength during aging in a 304 stainless steel cold-rolled with 40 % reduction is attributed to the additional formation of α′-martensite at 450 °C as well as to the increase of hardness in both the α′-martensite and austenite phases.

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Authors and Affiliations

  1. School of Advanced Material Engineering, Kookmin University, Seoul, 136-702, Korea

    S. H. Lee, J. C. Lee & W. J. Nam

  2. POSCO, Stainless Steel Research Group, POSCO Technical Research Laboratories, Pohang, P.O. Box 36, 790-785, Korea

    J. Y. Choi

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  1. S. H. Lee
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  2. J. C. Lee
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  3. J. Y. Choi
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  4. W. J. Nam
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Correspondence to W. J. Nam.

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Lee, S.H., Lee, J.C., Choi, J.Y. et al. Effects of deformation strain and aging temperature on strain aging behavior in a 304 stainless steel. Met. Mater. Int. 16, 21–26 (2010). https://doi.org/10.1007/s12540-010-0021-z

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  • DOI: https://doi.org/10.1007/s12540-010-0021-z

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