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Effect of Repair Welding on Mechanical and Microstructural Behaviors of Heat Affected Zone in HY100 Steels
수정 용접 횟수에 따른 HY100강 용접 열영향부의 기계적 성질과 미세조직 거동

Do-Seob Kim, Jeong-Hyeon Choi, Dong-Hyun Choi, Byung Rok Moon, Su-Kil Park, Namhyun Kang
김도섭, 최정현, 최동현, 문병록, 박수길, 강남현

Korean J. Met. Mater. 2025;63(2):121-131. Published online 2025 Feb 5
DOI: https://doi.org/10.3365/KJMM.2025.63.2.121

Abstract
The mechanical properties and microstructural behaviors of multiple–repaired welds were investigated in the heat affected zone (HAZ) of HY100 steels. Test coupons were prepared from flux cored arc welds at the same location of weldments that had been repaired one, three and five times. The multiple–repaired welding caused continuous high..... More

Influence of Boron and Manganese on Hot Crack Resistance and Low Temperature Toughness of Flux Cored Arc Weld Metal for High Strength Carbon Steels
고강도 탄소강 FCA 용착금속의 고온균열 저항성과 저온 충격인성에 미치는 보론과 망간의 영향

Su-Kil Park, Young-Ho Cho, Chun-Ho Jee, Junghoon Lee, Seong-Moon Seo, Namhyun Kang
박수길, 조영호, 지춘호, 이정훈, 서성문, 강남현

Korean J. Met. Mater. 2019;57(1):28-37. Published online 2018 Dec 14
DOI: https://doi.org/10.3365/KJMM.2019.57.1.28

Abstract
The hot crack resistance and mechanical properties of flux cored arc (FCA) welds were investigated with three kinds of welding consumables having different boron (B) and manganese (Mn) contents for high strength carbon steel. The hot crack resistance, measured from self-restraint testing, strongly depended on the amount of B in..... More

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