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Effect of Post-Weld Heat Treatment on Microstructure and Hardness Evolution of Functionally Graded Materials Produced by Direct Energy Deposition
고에너지 직접 적층법으로 제조된 경사조성재료의 미세조직 및 경도 변화에 미치는 후열처리 영향 연구
Giseung Shin, Yongho Park, Dae Whan Kim, Ji hyun Yoon, Jeoung Han Kim
신기승, 박용호, 김대환, 윤지현, 김정한
Korean J. Met. Mater. ;59(2):81-98.   Published online 2021 Jan 27
DOI: https://doi.org/10.3365/KJMM.2021.59.2.81

Abstract
In this work, the effects of post weld heat treatment (PWHT) on the microstructure and mechanical properties of functionally gradient materials (FGM) was investigated. The FGM consisted of five different layers which were mixtures of austenitic stainless steel (type 316L) and ferritic steel (LAS). The ratio of type 316L and..... More

      
Effects of Thermal Aging Induced Microstructure Evolution on Mechanical and Corrosion Properties of Delta-Ferrite in Austenitic Stainless Steel Weld
오스테나이트계 스테인리스강 용접부 델타-페라이트의 열화에 따른 미세조직 변화가 기계적 물성 및 부식 특성에 미치는 영향
Sang Kyu Park, Ho Jung Lee, Jong Hyeon Lee
박상규, 이호중, 이종현
Korean J. Met. Mater. 2018;56(4):296-303.   Published online 2018 Apr 5
DOI: https://doi.org/10.3365/KJMM.2018.56.4.296

Abstract
347 austenitic stainless steel weld (ASSW) was thermally aged at 343, 400 and 450 °C up to 20,000 h in this study. Effects of thermal aging induced microstructure evolution on the mechanical properties and corrosion resistance of delta-ferrite in the 347 ASSW were qualitatively and quantitatively assessed by high resolution..... More

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