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Investigation Of Surface Gradient Microstructure Of Shot Peened S30432 Steel By X-Ray Line Profile Analysis Method

Author

Listed:
  • K. ZHAN

    (School of Materials Science and Engineering, University of Shanghai for Science and Technology, 516 Jungong Road, Shanghai 200093, P. R. China)

  • W. Q. FANG

    (School of Materials Science and Engineering, University of Shanghai for Science and Technology, 516 Jungong Road, Shanghai 200093, P. R. China)

  • B. ZHAO

    (School of Materials Science and Engineering, University of Shanghai for Science and Technology, 516 Jungong Road, Shanghai 200093, P. R. China)

  • Y. YAN

    (School of Materials Science and Engineering, University of Shanghai for Science and Technology, 516 Jungong Road, Shanghai 200093, P. R. China)

  • Q. FENG

    (#x2020;School of Materials Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P. R. China)

  • C. H. JIANG

    (#x2020;School of Materials Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P. R. China)

Abstract

S30432 steels were processed by multistep shot peening treatment. The refined microstructures, including domain size, microstrain, domain size distribution and texture were characterized by X-ray diffraction (XRD) line profile analysis method, respectively. The results demonstrate that in the deformed layers, a gradient structure is formed after shot peening. The domain size reaches 25nm at the surface, then it decreases as the depth increases, but microstrain (0.0027) is the largest at the surface. The domain size distributions at different depths calculated by Rietveld method are consistent with domain size variation along the depth. There are no strong textures after shot peening treatment. The change of microhardness along the depth is in accordance with the gradient microstructure. It is expected that this work can offer useful information for characterizing the microstructure of shot peened materials.

Suggested Citation

  • K. Zhan & W. Q. Fang & B. Zhao & Y. Yan & Q. Feng & C. H. Jiang, 2017. "Investigation Of Surface Gradient Microstructure Of Shot Peened S30432 Steel By X-Ray Line Profile Analysis Method," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 24(06), pages 1-6, August.
    • Handle: RePEc:wsi:srlxxx:v:24:y:2017:i:06:n:s0218625x17500780
    DOI: 10.1142/S0218625X17500780
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