@article{oai:nagano-nct.repo.nii.ac.jp:00000371,
 author = {長坂, 明彦},
 journal = {長野工業高等専門学校紀要},
 month = {Dec},
 note = {application, The effects of chemical composition and retained austenite parameters (stability and volume fraction) on a warm hole-punching and warm hole-expanding of 0.2C-Si-1.5Mn high strength TRIP-aided dual-phase (TDP) sheet steels were investigated. The warm punching and successive warm expanding achieved the large stretch-flangeability, i.e., large hole-expanding ratio, low hole-expanding load and large hole-expanding height, by moderately suppressing the strain-induced transformation (SIT) of retained austenite particles. The hole-expanding ratio increased up to that of the ferrite-bainite dual-phase stee1. Optimum forming temperature Top for punching was　between 150 and 200℃, at which the SIT was suppressed the most. On the other hand, Top for expanding was between 50 and 200℃, and　linearly increased with increasing Ms of the retained austenite.},
 pages = {31--40},
 title = {0.2C-Si-1.5Mn複合組織鋼板の温間伸びフランジ性に及ぼす化学組成の影響},
 volume = {30},
 year = {1996}
}