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Microstructure and Tensile Properties of Ni-Base Superalloy IN738LC according to Solidification Rate and Heat Treatment
Ni기 초내열합금 IN738LC의 응고속도와 열처리에 따른 미세조직 및 인장 특성

Byung-Hoon Kim, Byeong-Ook Kong, Yun-Kon Joo, Young-Kyu Ju, Hyun-Uk Hong, Je-Hyun Lee
김병훈, 공병욱, 주윤곤, 주영규, 홍현욱, 이재현

Korean J. Met. Mater. 2024;62(6):445-454. Published online 2024 May 31
DOI: https://doi.org/10.3365/KJMM.2024.62.6.445

Abstract
The strength of Ni-base superalloys mainly depends on the γ' precipitates that improve the strength of the materials at high temperatures. The presence of γ' particles within the matrix restricts dislocation movement, and optimized heat treatments can tailor the size, shape, and volume fraction of γ'. In this study the..... More

Casting/Solidification/Heat Treatment

Study on the Surface Microstructure of a Modified STD61 Steel Mold Used for the Die Casting Process
다이캐스팅 공정에 사용된 개량형 STD61 열간 금형 표면의 미세조직에 관한 연구

Ha-Young Yu, Seung-Joon Lee, Minwoo Kang, Suk-Jin Lee, Won Jon Yang, Jae Suk Jeong, Byung-Hoon Kim, Young-Kook Lee
유하영, 이승준, 강민우, 이석진, 양원존, 정재석, 김병훈, 이영국

Korean J. Met. Mater. 2016;54(9):672-680. Published online 2016 Sep 5
DOI: https://doi.org/10.3365/KJMM.2016.54.9.672

Abstract
The surface microstructure and crack formation of an aluminum die-casting mold were investigated. The mold was made of a modified STD61 steel, and was used for more than 165,000 cycles. The mold surface consisted of four layers; an oxidized layer, a decarburized layer, a network carbide layer and a tempered... More

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