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시효열처리 및 UNSM 처리에 따른 316L 스테인리스강의 입계부식거동

Intergranular Corrosion of 316L Stainless Steel by Aging and UNSM (Ultrasonic Nano-crystal Surface Modification) treatment

김영식|이정희
한국재료부식학회 (The Corrosion Science Society of Korea)|2015.12|CORROSION SCIENCE AND TECHNOLOGY|제14권 제6호|pp. 313-324|DOI http://dx.doi.org/10.14773/cst.2015.14.6.313

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참고문헌

키워드

SensitizationResidual stressGrain refinementIntergranular corrosionUNSM316L stainless steelCarbon segregationCarbide formationGrain boundary engineering
주제분류금속공학

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.

Abstract

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.

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관련 논문AI추천

Intergranular Corrosion Mechanism of Slightly-sensitized and UNSM-treated 316L Stainless Steel김기태, 김영식, 이정희, 편영식한국재료부식학회 · CORROSION SCIENCE AND TECHNOLOGY2016 · 제15권 제5호오스테나이트계 중탄소 및 저탄소 스테인리스강의 입계부식 거동 분석김규빈, 김영식, 원석연, 유영란, 최승헌한국재료부식학회 · CORROSION SCIENCE AND TECHNOLOGY2022 · 제21권 제3호이음매 없는 304L 스테인리스강관의 부식특성에 미치는 열처리의 영향김기태, 김영식, 엄상빈한국재료부식학회 · CORROSION SCIENCE AND TECHNOLOGY2017 · 제16권 제6호304L 스테인리스강의 열처리에 따른 입계부식민감도 연구김동진, 김홍표, 장형민한국재료부식학회 · CORROSION SCIENCE AND TECHNOLOGY2020 · 제19권 제1호11 wt% 크롬이 함유된 Ti 첨가 페라이트스테인리스강의 입계부식에 미치는 규소의 영향김희산, 현영민한국재료부식학회 · CORROSION SCIENCE AND TECHNOLOGY2013 · 제12권 제6호316 스테인리스강의 입계부식에 미치는 열사이클과응력의 영향김무길, 정병호한국마린엔지니어링학회 · 한국마린엔지니어링학회지2006 · 제30권 제6호

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