• Title/Summary/Keyword: Crystallographic

Search Result 1,383, Processing Time 0.024 seconds

Microstructure and Hardness of 1st layer with Crystallographic Orientation of Solidification Structure in Multipass Weld using High Mn-Ni Flux Cored Wire (고(<24%)Mn 플럭스코어드와이어를 사용한 다층 용접 시 초층 응고조직의 결정면방위에 따른 미세조직과 경도)

  • Han, Il-Wook;Eom, Jung-Bok;Yun, Joong-Gil;Lee, Bong-Geun;Kang, Chung-Yun
    • Journal of Welding and Joining
    • /
    • v.34 no.5
    • /
    • pp.77-82
    • /
    • 2016

  • In this study, Microstructure and hardness of 1st layer with crystallographic orientation were investigated about solidification structure in multipass weld using high Mn-Ni flux cored wire. Microstructure of solidification consisted of austenite matrix and a little ${\varepsilon}-phase$ in grain boundaries. Orientation of grains was usually (001), (101), (111). According to crystallographic orientation, morphology of primary dendrite was different. The depletion of Fe and the segregation of Mn, C, Ni, Si, Cu, Cr, O were found along the grain boundaries. The area of segregation was wide with an order of (001), (101), (111) grains. And hardness of grains with crystallographic orientation increased with an order of (001), (101), (111) grains because of the segregation along dendrite boundary.

  • https://doi.org/10.5781/JWJ.2016.34.5.77 인용 PDF KSCI