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Korean J. Met. Mater.
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Korean Journal of Metals and Materials
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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 Kim신기승, 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.....
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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 Kim신기승, 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,.....
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Web of Science 3
Crossref 3
Direct Laser Deposition of 14Cr Oxide Dispersion Strengthened Steel Powders Using Y
2
O
3
and HfO
2
Dispersoids
Barton Mensah Arkhurst, Jin-Ju Park, Chang-Hoon Lee, Jeoung Han Kim
Korean J. Met. Mater.
2017;55(8):550-558. Published online 2017 Aug 1
DOI:
https://doi.org/10.3365/KJMM.2017.55.8.550
Abstract
This study investigated the feasibility of using HfO
2
as a dispersoid in the additive manufacturing process, compared to Y
2
O
3
. The effect of pre-annealing treatment was investigated too. Scanning electron microscopy (SEM) analyses revealed unusually coarse deposition layers for both the HfO
2
and Y
2
O
3
dispersed oxide dispersion strengthed (ODS) steels, in.....
More
Crossref 4
Effect of Second Aging Treatment on the Microstructure and Mechanical Properties of SUH660 Alloy
SUH660합금의 미세조직 및 기계적 특성에 미치는 2차 시효 열처리의 영향
Do-Hoon Kim, You-Hwan Lee, Jeoung Han Kim김도훈, 이유환, 김정한
Korean J. Met. Mater.
2016;54(10):716-722. Published online 2016 Oct 5
DOI:
https://doi.org/10.3365/KJMM.2016.54.10.716
Abstract
nSUH660 is a precipitation hardening stainless steel which has high strength at moderately high temperature. In this study, the effect of a secondary aging-treatment after the standard 720 °C heat-treatment was investigated. The Rockwell C hardness test with detailed TEM observerations was performed to study the steel’s hardening mechanism. The.....
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Crossref 3
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