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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

Web of Science 4 Crossref 4

A Study on the Influence of Laser Power on the Microstructure and Mechanical Properties of Functionally Graded Materials Produced by Direct Energy Deposition
고에너지 직접 적층법으로 제조된 경사조성재료의 미세조직 및 기계적 특성에 미치는 레이저 출력의 영향 연구

Giseung Shin, Ji hyun Yoon, Dae Whan Kim, Yongho Park, Jeoung Han Kim
신기승, 윤지현, 김대환, 박용호, 김정한

Korean J. Met. Mater. 2020;58(11):782-792. Published online 2020 Oct 15
DOI: https://doi.org/10.3365/KJMM.2020.58.11.782

Abstract
This study investigated the effects of laser power on the microstructure and mechanical properties of functionally gradient materials (FGM) produced by direct energy deposition. The FGM consisted of five different layers, which were a mixture of austenitic stainless steel (Type 316L) and ferritic steel (HSLA). During the direct energy deposition,..... More

Web of Science 3 Crossref 3

Effect of Ni, C and Ti Addition on Shape Recovery Behavior and the Mechanical Properties of Fe-17Mn-5Si-5Cr Shape Memory Alloys
Fe-17Mn-5Si-5Cr 형상기억합금의 형상복원거동 및 기계적 특성에 미치는 Ni, Ti 및 C의 영향

Dohyoung Kim, Yonghwan Kim, Jeong-Jung Oak, Junghoon Lee, Chan Hee Park, Wookjin Lee, Yongho Park
김도형, 김용환, 옥정중, 이정훈, 박찬희, 이욱진, 박용호

Korean J. Met. Mater. 2020;58(10):660-671. Published online 2020 Oct 5
DOI: https://doi.org/10.3365/KJMM.2020.58.10.660

Abstract
Fe-Mn-Si based shape memory alloy is a new functional material that can be used to apply prestress to civil and structural components such as concrete structures. In this study, the effects of alloying elements Ni, C and Ti on the mechanical and shape memory properties of the alloy were investigated..... More

Web of Science 7 Crossref 7

Effect of Added Gas-Atomized Al-Si/SiC_p Composite Powder on the Sinterability and Mechanical Properties of Alumix 431 fabricated by Hot-Pressing Process

Eunsun Lee, Jeong-Jung Oak, Yongjin Kim, Yongho Park

Korean J. Met. Mater. 2017;55(2):98-109. Published online 2017 Feb 2
DOI: https://doi.org/10.3365/KJMM.2017.55.2.98

Abstract
The aim of this study is to establish an optimized hot-press sintering condition for aluminum matrix composites (AMCs) by analyzing their sintered microstructure and mechanical properties. The fabricated AMCs in this study consisted of a blend of commercial Ecka Alumix 431 powder, and Al-Si/SiC_p powder manufactured by gas atomizer (Al-Si/SiC_p)...... More

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