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A comparative analysis of formability was investigated between F~Mn-C twinning induced plasticity steel with different Mn contents and interstitial free steel. Tensile test combing with the morphology of fracture reveals that element Mn is helpful for the forming of inclusion or particles with film or rod shapes inducing the crack initia- tion and propagation. During stamping process, twinning induced plasticity steel without earing shows better anisot- ropy than interstitial-free steel because a typical 〈111〉 fiber texture forms accompanied by a weaker 〈100〉 fiber texture. The difference between the two steels is not evident during Erichsen cone cupping test, but the result of cone cupping test indicates that the twinning induced plasticity steel has superior drawing ability compared with intersti tial-free steel. The different performances can be attributed to the different deformation mechanism during cupping test. FED （forming limit diagram） of tested steels further suggests twinning induced plasticity steel has slightly su- perior deep drawability but low stretchability than that of IF steel, whose FLD0 value can reach 30%.

The texture evolution of ferritic hot rolled Ti-IF steel during cold rolling was investigated in which the reduction was from 15% to 85 %. It was found that α fibre texture was monotonously intensified with the increase in the cold rolling reduction, while y fibre texture changed in a different way. When the cold rolling reduction was in the range of 15 % -- 35 % or 45 % -- 75 %, γ fibre texture was strengthened ; however, when the cold rolling reduction was 35 %- 45 % or 75 %- 85%, the intensity of 7 fibre was reduced. The 7 fibre displayed a maximum intensity for the reduction of 75%, and the highest average plastic strain ratio was simultaneously obtained owing to the favorable recrystallization texture.