DOI QR코드

DOI QR Code

시효열처리 및 UNSM 처리에 따른 316L 스테인리스강의 입계부식거동

이정희;김영식
Lee, J.H.;Kim, Y.S.

  • 투고 : 2015.11.03
  • 심사 : 2015.12.14
  • 발행 : 2015.12.31

초록

Austenitic stainless steels have been widely used in many engineering fields because of their high corrosion resistance and good mechanical properties. However, welding or aging treatment may induce intergranular corrosion, stress corrosion cracking, pitting, etc. Since these types of corrosion are closely related to the formation of chromium carbide in grain boundaries, the alloys are controlled using methods such as lowering the carbon content, solution heat treatment, alloying of stabilization elements, and grain boundary engineering. This work focused on the effects of aging and UNSM (Ultrasonic Nano-crystal Surface Modification) on the intergranular corrosion of commercial 316L stainless steel and the results are discussed on the basis of the sensitization by chromium carbide formation and carbon segregation, residual stress, grain refinement, and grain boundary engineering.

키워드

316L stainless steel;UNSM;Intergranular corrosion;Sensitization;Carbide formation;Carbon segregation;Residual stress;Grain refinement;Grain boundary engineering

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피인용 문헌

  1. Intergranular Corrosion Mechanism of Slightly-sensitized and UNSM-treated 316L Stainless Steel vol.15, pp.5, 2016, https://doi.org/10.14773/cst.2015.14.6.313
  2. Effect of Ultrasonic Nano-Crystal Surface Modification (UNSM) on the Passivation Behavior of Aged 316L Stainless Steel vol.10, pp.7, 2017, https://doi.org/10.14773/cst.2015.14.6.313