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Effect Of Plasma Nitriding Temperatures On Characteristics Of Aisi 201 Austenitic Stainless Steel

Author

Listed:
  • YUXIN GAO

    (School of Mechanical Engineering, Taizhou University, Taizhou 318000, China)

  • SHAOMEI ZHENG

    (School of Mechanical Engineering, Qingdao Technological University, Qingdao 266033, China)

Abstract

Samples of AISI 201 austenitic stainless steel were produced by plasma nitriding at 350∘C, 390∘C, 420∘C, 450∘C and 480∘C for 5h. Systematic characterization of the nitrided layer was carried out in terms of micrograph observations, phase identification, chemical composition depth profiling, surface microhardness measurements and electrochemical corrosion tests. The results show that the surface hardness and the layer thickness increased with increasing temperature. XRD indicated that a single S-phase layer was formed during low temperature (≤420∘C), while Cr2N or CrN phase was formed besides S-phase when nitrided at 450∘C and 480∘C. The specimen treated at 390∘C presents a much enhanced corrosion resistance compared to the untreated substrate. The corrosion resistance deteriorated for samples treated above 450∘C due to the formation of chromium nitrides.

Suggested Citation

  • Yuxin Gao & Shaomei Zheng, 2016. "Effect Of Plasma Nitriding Temperatures On Characteristics Of Aisi 201 Austenitic Stainless Steel," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 23(01), pages 1-8, February.
    • Handle: RePEc:wsi:srlxxx:v:23:y:2016:i:01:n:s0218625x15500845
    DOI: 10.1142/S0218625X15500845
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