Hydrogen embrittlement in AHSS containing （唯有通过含有氢脆）.pdf

Hydrogen embrittlement in AHSS containing metastable austenite 1 1 1 1 2 3 X.J. Jin ,W. Li , X. Zhu , Y.H. Rong , L. Wang , H. Jiao 1 School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China 2 Baosteel Research Institute, Shanghai 201900, China 3 Oxford Instruments, Shanghai, 201102, China August 2014 @ Northeast University, Shenyang, China jin@ OUTLINE Introduction Hydrogen embrittlement of QP980 steel Improved HE of TRIP780 by tempering Improved HE of QP980 by tempering Conclusion remarks Third Generation AHSS property band US – DOE Targets in 2012 Integrated Computational Materials Engineering （ICME） Program are even greater (30%/1200MPa and 25%/1500MPa) E. De Moor, P.J. Gibbs, J.G. Speer, D.K. Matlock, and J.G. Schroth: AIST Trans., 2010, vol. 7 (3), pp. 133–44. 3 J.G. Speer, D.K. Matlock , et al, METALLURGICAL AND MATERIALS TRANSACTIONS A, September 2011 How to develop Third Generation AHSS Function of austenite volume fraction Dependence of elongation to failure on tensile strength and residue austenite fraction of different steel (a) total elongation and ultimate tensile strength and (b) product of ultimate tensile strength to total elongation and austenite volume fraction Dong H., Sun XJ., Cao WQ., Liu ZD., et al., On the performance improvement of steels through M 3 structure control, Advanced Steels, 2011, 35-57. From TRIP effect to TRIP-assisted 0.15*15%=2.25% Composite deformation behavior. H.K.D.H. Bhadeshia,