摘要
Super-ductile and high strength manganese TWIP steels have received much attention in recent years.In the present work,two high Mn high Al steels with different stacking fault energies were investigated, microstructures were examined and mechanical properties were measured.The results showed that Fe-26Mn-6Al- 1C steel（6Al steel） exhibits high tensile strength and Fe-26Mn-12Al-1C steel（12Al steel） possesses a very high strength.Both steels exhibit good ductility.For 6Al steel with a moderate stacking fault energy（60 mJ/m;）, twinning is the major deformation mechanism;while dislocation slip dominates the deformation process of 12Al steel with stacking fault energy of 90 mJ/m;.
Super-ductile and high strength manganese TWIP steels have received much attention in recent years.In the present work,two high Mn high Al steels with different stacking fault energies were investigated, microstructures were examined and mechanical properties were measured.The results showed that Fe-26Mn-6Al- 1C steel(6Al steel) exhibits high tensile strength and Fe-26Mn-12Al-1C steel(12Al steel) possesses a very high strength.Both steels exhibit good ductility.For 6Al steel with a moderate stacking fault energy(60 mJ/m^2), twinning is the major deformation mechanism;while dislocation slip dominates the deformation process of 12Al steel with stacking fault energy of 90 mJ/m^2.
作者
DING Hua~(1)),WANG Xilai~(1,2)),SU Mohan~(3)),LI Hanlin~(3)) and WANG Li~(1)) 1) Northeastern University,Shenyang 110189,China 2) Lanzhou Institute of Physics,Lanzhou 730000,China 3) University of Science and Technology Beijing,Beijing 100083,China
