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1 GPa 급 고강도강 용접금속에서의 침상형 페라이트 핵생성 거동

Title
1 GPa 급 고강도강 용접금속에서의 침상형 페라이트 핵생성 거동
Other Titles
Nucleation Behavior of Acicular Ferrite in 1 GPa Class High Strength Steel Weld Metal
Author
이창희
Keywords
High strength steel; Weld metal; Acicular ferrite; Nucleation
Issue Date
2019-02
Publisher
대한용접접합학회
Citation
대한용접접합학회지, v. 37, NO 1, Page. 21-26
Abstract
In this study, the nucleation behavior of acicular ferrite in 1 GPa class high strength steel weld metal was investigated. A 1 GPa class as-deposited weld metal specimen was prepared by single-pass welding using a prototype flux-cored wire, and a reheated weld metal specimen was obtained using Gleeble simulation technique. The typical inclusion in both specimens was composed of MnTi₂O₄ and amorphous. It was found that the inclusion potency for acicular ferrite nucleation was maximized in the as-deposited weld metal because of both the formation of Mn-depleted zone (MDZ) near the MnTi2O4 and the low interfacial energy between the MnTi2O4 and ferrite. In the reheated weld metal specimen, it was observed that the inclusion potency decreased possibly due to the homogenization of Mn in the MDZ that occurred during reheating thermal cycling.
URI
http://e-jwj.org/journal/view.php?doi=10.5781/JWJ.2019.37.1.3https://repository.hanyang.ac.kr/handle/20.500.11754/132998
ISSN
2466-2232; 2466-2100
DOI
10.5781/JWJ.2019.37.1.3
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MATERIALS SCIENCE AND ENGINEERING(신소재공학부) > Articles
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