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Microstructural Evolution with Solidification Rate and Heat-Treatment of Single Crystal Superalloy CMSX-4 Grown using Seed
Seed를 이용한 단결정 초내열합금 CMSX-4에서 응고속도 및 열처리에 따른 미세조직 변화
Suncheol Kwon, Jongho Shin, Geunyoung Rim, Gitae Sung, Byunggwan Yoon, Euisuk Jung, Jehyun Lee
권순철, 신종호, 임근영, 성기태, 윤병관, 정의석, 이재현
Korean J. Met. Mater. 2018;56(10):745-754.   Published online 2018 Oct 5
DOI: https://doi.org/10.3365/KJMM.2018.56.10.745

Abstract
The CMSX-4 superalloy including refractory elements was directionally solidified using the seed of a [001] single crystal to control the growth direction to [001], where solidification velocity was changed from 25 to 160 μm/s. In the log-log plot between spacing and solidification velocity, the primary dendrite arm spacing and secondary..... More

                        
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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