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Microstructure and Mechanical Properties of High Manganese TRIP Steel

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Abstract

Microstructure evolution and mechanical properties of newly designed 0.1C−6Mn−0.5Si−1A1 TRIP-aided steels under different annealing conditions and the effects of matrix microstructure before intercritical annealing on the final microstructure were studied by means of X-ray diffraction (XRD), scanning electron microcopy (SEM), dilatometric simulation, optical microstructure (OM) and tensile testing in this work. The experimental results indicate that the TRIP steel with Mn of 6% could form a considerable amount of retained austenite with good TRIP effect after a simple intercritical annealing treatment, and the matrix microstructure before intercritical annealing treatment can greatly affect the final microstructure. The original microstructure of the ferritic matrix steel was eliminated, while annealed martensite was remained from the martensite matrix steel under the same intercritical annealing conditions.

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Authors and Affiliations

  1. College of Material Science and Engineering, Shanghai University, Shanghai, 200072, China

    Jin-long Zhao (Master), Yan Xi, Wen Shi & Lin Li

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  1. Jin-long Zhao
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  2. Yan Xi
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  3. Wen Shi
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  4. Lin Li
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Correspondence to Jin-long Zhao.

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Foundation Item: Item Sponsored by National Basic Research Program of China (2010CB630802)

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Zhao, Jl., Xi, Y., Shi, W. et al. Microstructure and Mechanical Properties of High Manganese TRIP Steel. J. Iron Steel Res. Int. 19, 57–62 (2012). https://doi.org/10.1016/S1006-706X(12)60088-0

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  • DOI: https://doi.org/10.1016/S1006-706X(12)60088-0

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