TRIP型複合組織鋼板の深絞り性に及ぼす温間加工の影響(第1報)コニカルカップ試験

概要

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To gimprove the deep drawing of a high-strength TRIP-aided dual-phase (TDP) steel sheet, the effects of warm forming on the deep drawability were investigated. Deep drawing tests were performed on an Instron machine to measure Conical Cup Value (CCV) and maximum drawing load (P<max>). The resultant lower CCV and higher P<max> are obtained at 100～150℃ for the TDP steel because strain-induced transformation (SIT) of retained austenite particles is extremely suppressed in the temperature range. The CCV of the TDP steel depended considerably on the deep drawing temperature, which appeared hardly for a ferrite-bainite dual-phase (BDP) steel without retained austenite. The deep drawing of the TDP steel is improved by warm forming at 100～150℃.
長野工業高等専門学校の論文
1997-00-00