논문 국내 국제전문학술지(SCI급) A Study on the Influence of Laser Power on the Microstructure and Mechanical Properties of Functionally Graded Materials Produced by Direct Energy Deposition
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2020-11
- 저자명 김정한,신기승,윤지현,김대환,박용호
- 학술지명 KOREAN JOURNAL OF METALS AND MATERIALS
- 발행처명 KOREAN INST METALS MATERIALS
- 발행국가 국내
- 논문언어 한국어
- 전체저자수 5
홈페이지논문 초록 (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, two different laser power conditions (450W and 380W) were used. The ratio of Type 316L and HSAL at each deposition layers were 100:0, 65:35, 50:50, 25:75, and 0:100. After the direct energy deposition process, no cracks or delamination were seen between layers of the FGM. The effects of laser power on chemical composition and microstructure were not significant. However, as the laser power decreased, tensile strength and elongation changed with a small change in grain size.