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Enhancement Of Mechanical Properties And Corrosion Resistance Of Low-Carbon Steel With Gradient Microstructure By Impact Peening And Recovery Treatment

Author

Listed:
  • XIANGYANG MAO

    (School of Materials Engineering, Nanjing Institute of Technology, No. 1 Hongjing Road, Nanjing 211167, P. R. China2Jiangsu Key Laboratory of Advanced Structural Materials and Application Technology, No. 1 Hongjing Road, Nanjing 211167, P. R. China3Jiangsu Gongchang Roll Joint-Stock Co., Ltd., Xinjian Town, Yixing 214253, P. R. China)

  • HAO LIANG

    (School of Materials Engineering, Nanjing Institute of Technology, No. 1 Hongjing Road, Nanjing 211167, P. R. China)

  • ZHANGZHONG WANG

    (School of Materials Engineering, Nanjing Institute of Technology, No. 1 Hongjing Road, Nanjing 211167, P. R. China)

  • LIJUN SHAO

    (Jiangsu Gongchang Roll Joint-Stock Co., Ltd., Xinjian Town, Yixing 214253, P. R. China)

Abstract

A gradient microstructure was generated on a low-carbon steel/Cr alloy through severe deformation by an impact peening and a recovery treatment. The microstructure was probed by scanning electron microscopy, energy disperse spectroscopy and x-ray diffraction. The microhardness, tensile strength and electrochemical corrosion resistance of the gradient microstructure surface were studied. The material with a fine grain gradient microstructure on the surface had increased microhardness, strength, ductility and corrosion resistance compared to a low-carbon steel standard. When a Cr solution was added, a hard (Fe,Cr)7C3 phase was generated, suggesting that Cr alloying plays important roles in these enhanced properties.

Suggested Citation

  • Xiangyang Mao & Hao Liang & Zhangzhong Wang & Lijun Shao, 2018. "Enhancement Of Mechanical Properties And Corrosion Resistance Of Low-Carbon Steel With Gradient Microstructure By Impact Peening And Recovery Treatment," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 25(02), pages 1-9, February.
    • Handle: RePEc:wsi:srlxxx:v:25:y:2018:i:02:n:s0218625x18500488
    DOI: 10.1142/S0218625X18500488
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