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L-DED 공정으로 제조된 AISI 316L 스테인리스 스틸의 적층 형상 및 특성에 미치는 공정 변수의 영향
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박지영, 남현지, Qing-Ye Jin, 이욱진
Korean J. Met. Mater.
2023;61(10):760-771. Published online 2023 Sep 25
DOI:
https://doi.org/10.3365/KJMM.2023.61.10.760
Abstract
In this study, AISI 316L stainless steels were manufactured by the L-DED process with various laser scanning speeds and laser powers, in order to analyze how volumetric energy density (VED) can affect their final shape, microstructure and mechanical properties. Under various VED conditions, it was found that a higher VED.....
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Crossref 1
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산소함량에 따른 Ti-6Al-4V 적층제조 조형체의 미세조직 및 기계적 특성 변화
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강태진, P.L. Narayana, 최성우, 김재혁, 홍재근, 이태경
Korean J. Met. Mater.
2023;61(9):714-720. Published online 2023 Aug 30
DOI:
https://doi.org/10.3365/KJMM.2023.61.9.714
Abstract
Titanium alloys are used in many fields including military, aerospace, and biomedical because of their excellent specific strength, corrosion resistance, and biocompatibility. Recently, much research has been focused on addressing the disadvantages of conventional manufacturing methods, including reducing material and energy waste when manufacturing titanium alloy parts by additive manufacturing.....
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Web of Science 1
Crossref 3
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X-선 회절을 통한 적층제조 A356.2 알루미늄 합금의 잔류응력 분석
[corrected-article]
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박상철, 김인영, 김영일, 김대겸, 오승주, 이기안, 이빈
Korean J. Met. Mater.
2023;61(7):534-544. Published online 2023 Jun 21
DOI:
https://doi.org/10.3365/KJMM.2023.61.7.534
Abstract
The physical properties of metal-based structural materials, such as hardness, strength and toughness, are directly or indirectly affected by residual stress inside or on the surface of the given part. Repeated rapid heating and cooling during the additive manufacturing process causes thermal gradients and expansion and contraction in the material,.....
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Web of Science 1
Crossref 1
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DED 공정에서의 SS304L 적층 조건 최적화
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김성은, 유승찬, 김현길
Korean J. Met. Mater.
2022;60(11):819-826. Published online 2022 Oct 31
DOI:
https://doi.org/10.3365/KJMM.2022.60.11.819
Abstract
The direct energy deposition (DED) method is an emerging manufacturing technique that has been recently highlighted due to its capabilities to coat materials with complex geometry for high temperature and highly corrosive environmental applications, such as steam turbine blade. Amongst metallic materials, SS304L has been reported to have superior corrosion.....
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Web of Science 4
Crossref 4
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구영진, 이윤주, 이명현, 윤석영
Korean J. Met. Mater.
2022;60(9):685-693. Published online 2022 Aug 30
DOI:
https://doi.org/10.3365/KJMM.2022.60.9.685
Abstract
With the development of additive manufacturing technology, many types of materials are being utilized, and methods of printing the materials and characteristics of their hydration properties are being studied in the fields of construction and biotechnology. Tricalcium silicate (C3S), which is used as a cement material or biomaterial, is a.....
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구영진, 이명현, 윤석영, 이윤주
Korean J. Met. Mater.
2022;60(4):321-328. Published online 2022 Mar 28
DOI:
https://doi.org/10.3365/KJMM.2022.60.4.321
Abstract
3D printing technology has advanced rapidly over the last decade. However, for ceramic materials, drying and sintering steps are required after printing, and excessive shrinkage that occurs during these steps is a major factor that has hindered the development of the ceramic 3D printing technology. In this study, a non-sintering.....
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Web of Science 1
Crossref 1
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적층제조 공정으로 구현된 형상 적응형 냉각채널 적용 다이캐스팅 금형의 냉각성능 평가
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박유진, 김억수, 이정훈, 최지환, 윤필환, 강호정, 김동현, 박용호, 고종완
Korean J. Met. Mater.
2021;59(9):652-663. Published online 2021 Aug 4
DOI:
https://doi.org/10.3365/KJMM.2021.59.9.652
Abstract
A cooling channel with an optimized design provides not only high throughput with gravity die casting, but also guarantees product quality. A conformal cooling channel (CC) whose structure follows the shapes or surfaces of the mold cavity has attracted great attention in the die casting industry, because it allows rapid.....
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Web of Science 2
Crossref 2
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Korean J. Met. Mater.
2020;58(12):852-862. Published online 2020 Dec 4
DOI:
https://doi.org/10.3365/KJMM.2020.58.12.852
Abstract
Generally, molds are fabricated by the machining of massive billets of tool steels, such as AISI4140 or H13, but it has drawbacks, such as a large material loss and long-delivery time. The Wire-Arc Additive Manufacturing (WAAM) process could be an alternative fabrication method. It has the advantages of less material.....
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Web of Science 8
Crossref 11
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고에너지 직접 적층법으로 제조된 경사조성재료의 미세조직 및 기계적 특성에 미치는 레이저 출력의 영향 연구
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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,.....
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Web of Science 3
Crossref 3
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레이저 직접적층법으로 제조된 Fe-8Cr-3V-2Mo-2W합금의 마모특성에 미치는 열처리공정 및 상대재의 영향
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하경식, 박영근, 김태환, 백경윤, 전종배, 심도식, 문영훈, 이욱진
Korean J. Met. Mater.
2020;58(10):680-692. Published online 2020 Oct 5
DOI:
https://doi.org/10.3365/KJMM.2020.58.10.680
Abstract
This study aimed to investigate the wear performance of laser direct energy deposited Fe-8Cr3V-2Mo-2W alloy under various wear environments, in terms of different heat treatment conditions. Ball on disk tribology tests were performed using high-carbon steel and zirconia balls as counter materials. The wear rates of the alloy depended significantly.....
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Web of Science 8
Crossref 10
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Directed Energy Deposition에서 흄의 생성 원인 및 대책
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김강형, 정찬현, 정대용, 현승균
Korean J. Met. Mater.
2020;58(6):383-396. Published online 2020 May 14
DOI:
https://doi.org/10.3365/KJMM.2020.58.6.383
Abstract
Pores and cracks are known as the main defects in metal additive manufacturing (MAM), including directed energy deposition(DED). A gaseous fume is often produced by laser flash (instantaneous high temperature) during laser processing, which may cause various defects such as porosity, lack of fusion, inhomogeneity, low flowability and composition change,.....
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Web of Science 2
Crossref 2
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SLM공정에 의해 제조된 316L 스테인레스 스틸 격자구조체의 압축 거동 평가
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이진명, 이정음, 김지훈, 김상우
Korean J. Met. Mater.
2020;58(4):227-233. Published online 2020 Mar 10
DOI:
https://doi.org/10.3365/KJMM.2020.58.4.227
Abstract
Lattice structures are multi-functional materials with various advantages such as high specific stiffness, high energy absorption capacity and good thermal management capability. Recently, the development of manufacturing technologies using metal powders has facilitated fabrication of complex products; consequently, interest in lattice structures has grown. In this work, two kinds of.....
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Web of Science 1
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Korean J. Met. Mater.
2019;57(4):227-235. Published online 2019 Apr 5
DOI:
https://doi.org/10.3365/KJMM.2019.57.4.227
Abstract
The additive manufacturing (AM) process is a production technology process that has recently attracted attention. Among AM processes, the binder jetting (BJ) method is advantageous because it allows both wide material selection and design freedom. However, the output arrangement, which determines the direction in which the binder is injected during.....
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Web of Science 16
Crossref 19
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