열연 DP 강의 오스테나이트 내 탄소 재분배를 고려한 MS 예측The Prediction of MS Considering Carbon Redistribution of Austenite in Hot RolledDual Phase Steels
- Other Titles
- The Prediction of MS Considering Carbon Redistribution of Austenite in Hot RolledDual Phase Steels
- Authors
- 최종민; 이상환; 이창수; 서석종; 이경종
- Issue Date
- Jun-2007
- Publisher
- KOREAN INST METALS MATERIALS
- Keywords
- dual phase steels; carbon enrichment; nano-indentation
- Citation
- JOURNAL OF THE KOREAN INSTITUTE OF METALS AND MATERIALS, v.45, no.6, pp.329 - 338
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- JOURNAL OF THE KOREAN INSTITUTE OF METALS AND MATERIALS
- Volume
- 45
- Number
- 6
- Start Page
- 329
- End Page
- 338
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/180043
- ISSN
- 1738-8228
- Abstract
- During the production of dual phase(DP) steels, intermediate phases such as acicular ferrite or upper bainite were frequently observed, which were very detrimental to the mechanical property of DP steels. The existence of undesirable phases could be adjusted by the enrichment and the redistribution of carbon in retained austenite after formation of polygonal ferrite during inter-critical annealing. In this study, the enrichment and the redistribution of carbon, which was a major strengthening factor, were measured by nano-hardness by changing holding time during inter-critical annealing. Indentation was conducted from center to near boundary of 2nd phases. The diffusion behavior of carbon during inter-critical annealing between DP steel and plain carbon steel was compared in order to understand the effect of Si on behavior of carbon and phase transformation.
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