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Microstructural study of the nano-scale martensitic lamellar α-Co and ε-Co phases of a Co-Cr alloy fabricated by selective laser melting
- Kim, Hyung Giun;
- Kim, Won Rae;
- Park, Hyun Woong;
- Bang, Gyung Bae;
- Jung, Kyung-Hwan;
- ... Lim, Sung Hwan;
- 외 1명
WEB OF SCIENCE
13SCOPUS
13초록
An interfacial microstructural study was carried out to clarify the hardening mechanism of an as-built Co-Cr alloy fabricated by selective laser melting (SLM). Using transmission electron microscopy, we found a unique martensitic lamellar microstructure with a specific orientation relationship between the alpha-Co and epsilon-Co phases; specifically, a nanoscale microstructure consisting of (111)(alpha-Co)//(000 (2) over bar)(epsilon-Co) and [0 (1) over bar1](alpha-Co)//[(1) over bar2 (1) over bar0](epsilon-Co) was formed on the Co-Cr alloy. The Co-Cr alloy fabricated by SLM with a martensitic microstructure achieved a Vickers hardness value of approximately 369.36 +/- 11.86 HV without any secondary-phase particles such as carbides. (C) 2021 The Authors. Published by Elsevier B.V.
키워드
- 제목
- Microstructural study of the nano-scale martensitic lamellar α-Co and ε-Co phases of a Co-Cr alloy fabricated by selective laser melting
- 저자
- Kim, Hyung Giun; Kim, Won Rae; Park, Hyun Woong; Bang, Gyung Bae; Jung, Kyung-Hwan; Son, Yong; Lim, Sung Hwan
- 발행일
- 2021-05
- 유형
- Article
- 권
- 12
- 페이지
- 437 ~ 443