Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1522855 | Materials Chemistry and Physics | 2013 | 9 Pages |
Abstract
By performing various laboratory hot-rolling simulation tests, effective rolling conditions for steel with a composition (mass %) of 0.06C-2.0Mn-0.5Si-0.5Cr-0.2(Ti + Nb + V) was studied. Very remarkable mechanical properties were obtained when the coiling simulation temperature was 650 °C: a hole-expanding ratio of 65%, total elongation of 19%, and ultimate tensile strength of 998 MPa were achieved in the hot-rolled state. These results were associated with the Ti-Nb-V multi-microalloyed carbides (10-50 nm in size) precipitated in the ferrite matrix, and with the minimized deviation in interphase hardness.
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Authors
Eun Joon Chun, Hyeonghyeop Do, Seongju Kim, Dae-Geun Nam, Yong-Ho Park, Namhyun Kang,