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철계 비동일분율 고엔트로피 합금의 인장 강도에 미치는 소결 조건 영향 KCI 등재

Effect of Sintering Condition on Tensile Strength of Fe-based Non-equiatomic High Entropy Alloy

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한국분말야금학회지 (Journal of Korean Powder Metallurgy Institute)
한국분말재료학회(구 한국분말야금학회) (Korean Powder Metallurgy Institute)
초록

We fabricate the non-equiatomic high-entropy alloy (NE-HEA) Fe49.5Mn30Co10Cr10C0.5 (at.%) using spark plasma sintering under various sintering conditions. Each elemental pure powder is milled by high-energy ball milling to prepare NE-HEA powder. The microstructure and mechanical properties of the sintered samples are investigated using various methods. We use the X-ray diffraction (XRD) method to investigate the microstructural characteristics. Quantitative phase analysis is performed by direct comparison of the XRD results. A tensile test is used to compare the mechanical properties of small samples. Next, electron backscatter diffraction analysis is performed to analyze the phase fraction, and the results are compared to those of XRD analysis. By combining different sintering durations and temperature conditions, we attempt to identify suitable spark plasma sintering conditions that yield mechanical properties comparable with previously reported values. The samples sintered at 900 and 1000oC with no holding time have a tensile strength of over 1000 MPa.

목차
Abstract
서 론
실험 방법
결과 및 고찰
4. 결 론
References
저자
  • 서남혁(전북대학교 신소재공학부) | Namhyuk Seo (Division of Advanced Materials Engineering, Research Center for Advanced Materials Development, Jeonbuk National University)
  • 전준협(전북대학교 신소재공학부) | Junhyub Jeon (Division of Advanced Materials Engineering, Research Center for Advanced Materials Development, Jeonbuk National University)
  • 김광훈(전북대학교 신소재공학부) | Gwanghun Kim (Division of Advanced Materials Engineering, Research Center for Advanced Materials Development, Jeonbuk National University)
  • 박정빈(전북대학교 신소재공학부) | Jungbin Park (Division of Advanced Materials Engineering, Research Center for Advanced Materials Development, Jeonbuk National University)
  • 손승배(전북대학교 신소재공학부) | Seung Bae Son (Division of Advanced Materials Engineering, Research Center for Advanced Materials Development, Jeonbuk National University)
  • 이석재(전북대학교 신소재공학부) | Seok-Jae Lee (Division of Advanced Materials Engineering, Research Center for Advanced Materials Development, Jeonbuk National University) Corresponding Author