@article{oai:soar-ir.repo.nii.ac.jp:00012358,
 author = {村田,  宗央 and 小林,  純也 and 杉本,  公一},
 issue = {2},
 journal = {鉄と鋼},
 month = {Feb},
 note = {The microstructure, retained austenite characteristics, tensile properties and stretch-flangeability of ultra high-strength 0.2%C-1.5%Si-1.5%Mn (mass%) TRIP-aided bainitic ferrite cold-rolled sheet steel, "TBF steel", were investigated for automotive applications. When isothermally held at temperatures less than martensite-start temperature for 300-3000 s after annealing or austenitizing, the TBF steel possessed mixed matrix structure of bainitic ferrite and martensite, with retained austenite of about 4 vol%. The TBF steel achieved the tensile strength higher than 1400 MPa and hole-expanding ratio of 40%. The good combination of tensile strength and hole-expanding ratio was mainly Caused by highly carbon-enriched retained austenite and softened matrix structure composing of bainitic ferrite and martensite., Article, 鉄と鋼. 96(2):84-92 (2010)},
 pages = {84--92},
 title = {ベイニティックフェライト・マルテンサイト混合組織を母相とする超高強度低合金TRIP鋼板の伸びフランジ性},
 volume = {96},
 year = {2010}
}