Focus on Fe-C 上游充道大粤 SHANGHAI JIAO TONG UNIVERSITY By far greatest tonnage of metal used by man Why carbon? No other alloy system has been studied in such detail Solid-state phase changes in steel are varied and interesting Reactions in Fe-C system are similar to those in other alloy systems 70 Lightweight Potential 0印 2nd Generation AHSS 3 BH 3rd Generation AHSS CMn TRIP HSLA DP.CP Higher Forces Springback 10 MART PHS 200400 6008001,0001.2001,4001,6001,8002000 Ultimate Tensile Strength(MPa) OMild Steels Conventional HSS AHSS(1st Generation) 2nd Generation AHSS3rd Generation AHSS(planned) Billur&Altan,Stamping Journal,Nov.2013,p16-17 K.Chen 2K. Chen By far greatest tonnage of metal used by man Why carbon? No other alloy system has been studied in such detail Solid-state phase changes in steel are varied and interesting Reactions in Fe-C system are similar to those in other alloy systems Focus on Fe-C 2 Billur&Altan, Stamping Journal, Nov. 2013, p16-17