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Byungmoon Chang 2 Articles
674 Prediction of Primary Dendrite Arm Spacing with Solidification Velocity and Temperature Gradient during Directional Solidification in CMSX-4 Superalloy
CMSX-4 초내열합금에서 일방향 응고속도와 온도경사의 변화에 따른 1차 수지상 간격 예측
Jongho Shin, Changhoon Sung, Suncheol Kwon, Sukhwan Kwon, Byungmoon Chang, Jehyun Lee
신종호, 성창훈, 권순철, 권석환, 장병문, 이재현
Korean J. Met. Mater. 2018;56(9):674-679.   Published online 2018 Sep 5
DOI: https://doi.org/10.3365/KJMM.2018.56.9.674

Abstract
Directional solidification experiments were carried out to estimate the effect of solidification velocity and temperature gradient on primary dendrite arm spacing (PDAS) in the Ni-based superalloy, CMSX-4 alloy. The specimens were solidified at velocities of 1, 5, 25, 50 and 100 mm/s under given temperature gradients of 12.5, 18, 23..... More

                        
838 Evolution of the Solidification Microstructures in Directionally Solidified CM247LC Rod
CM247LC 초내열합금에서 일방향응고에 따른 응고조직 변화
Jeongseok Lee, Seokhwan Kown, Byunggwan Yoon, Byungmoon Chang, Yongil Jung, Jehyun Lee
이정석, 권석환, 윤병관, 장병문, 정연길, 이재현
Korean J. Met. Mater. 2016;54(11):838-845.   Published online 2016 Nov 5
DOI: https://doi.org/10.3365/KJMM.2016.54.11.838

Abstract
Directional solidification of CM247LC was performed at a constant growth velocity (300 mm/h) using a Bridgman type furnace. Microstructural features, including the number of grains, PDAS, and EBSD IPF map, were investigated with progressive positions from the starter block. As directional solidification proceeded, the number of grains decreased and PDAS..... More

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