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Investigation Of Cyclic Softening Behavior Of Shot Peened S30432 Austenitic Stainless Steel By X-Ray Diffraction Method

Author

Listed:
  • KE ZHAN

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

  • XUE JUN ZHENG

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

  • HAO HAN

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

  • QIANG FENG

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

  • CHUAN HAI JIANG

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

Abstract

Microstructure evolution of shot peened S30432 austenitic stainless steel under external loading was investigated by X-ray diffraction method. The domain size, micro-strain, and dislocation density were calculated by Voigt method and Williamson method, respectively. The results show that the dislocation density decreases sharply in initial stage, then undergoes a stable stage, following by an increase in the end. It reveals that cyclic softening happened during cyclic loading, and it can ascribe to the high dislocation density after shot peening (SP). This study suggests that cyclic softening behavior may need to take into consideration when considering the strengthening effect of SP.

Suggested Citation

  • Ke Zhan & Xue Jun Zheng & Hao Han & Qiang Feng & Chuan Hai Jiang, 2014. "Investigation Of Cyclic Softening Behavior Of Shot Peened S30432 Austenitic Stainless Steel By X-Ray Diffraction Method," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 21(06), pages 1-5.
    • Handle: RePEc:wsi:srlxxx:v:21:y:2014:i:06:n:s0218625x14500760
    DOI: 10.1142/S0218625X14500760
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