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The study of work hardening in Fe-Mn-Al-C alloys

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Abstract

Three austenitic Fe-Mn-Al-C alloys with different aluminium content from 0, 5.1 and to 8.5wt% are chosen for the present work hardening study. Serrated stress-strain curves with pronounced work hardening were observed during tensile testing, also the serration of stress-strain curve is found to be decreasing as the increase of aluminium content. The serration can, however, still be observed even if the aluminium content is increased to as much as 8.5wt%. According to morphology studies and electron microscopic investigations, it is found that strain-induced deformation twins are closely related to the work hardening in the present alloys. Therefore, deformation twinning is strongly suggested as a major cause of work hardening in Fe-Mn-Al-C alloys, and also plays an important role on the serration of stress-strain curve.

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Authors and Affiliations

  1. Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, Taiwan, Republic of China

    H. J. Lai & C. M. Wan

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  1. H. J. Lai
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  2. C. M. Wan
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Lai, H.J., Wan, C.M. The study of work hardening in Fe-Mn-Al-C alloys. J Mater Sci 24, 2449–2453 (1989). https://doi.org/10.1007/BF01174510

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  • DOI: https://doi.org/10.1007/BF01174510

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