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1 前言近年来 ,环境保护要求轿车车体实现轻量化和提高轿车的冲撞安全性 ,在为此目的而开发出的高强度钢板中 ,利用残余奥氏体 (γR)相变诱发塑性 (TRIP)原理开发出的 TRIP双相钢 (TDP)具有非常良好的冲压成型性。 590 MPa级热轧TRIP钢板已经实际应用到轿车前梁等吸收冲击能的
1 INTRODUCTION In recent years, environmental protection has required the car body to be lightweight and to improve the collision safety of cars. In the high-strength steel sheet developed for this purpose, residual austenite (γR) phase change induced plasticity (TRIP) TRIP Duplex Steel (TDP) has been developed with very good press formability. 590 MPa hot-rolled TRIP steel plate has been actually applied to the car front beam absorption of impact energy