Abstract：Microstructures and tensile properties of new high carbon Fe-Ni-Mn-Si-C steels were investigated by optical microscope, X-ray diffraction and TEM. The results show that twinning induced plasticity effect is the main plasticity mechanism of the Fe-Ni-Mn-Si-C steels. With the increasing of carbon content, yield strength increases from 391 MPa to 458 MPa, tensile strength increases from 860 MPa to 974 MPa, and elongation increases from 63.6% to 69.2%. The serrated flow on the stress-strain curve becomes more obvious with the increasing of the carbon content. Fe-15Ni-12Mn-2.5Si-XC steels have high strain hardening capacity, and the maximal strain hardening exponent of the steels can reach up to 0.73 when the carbon content increases to 0.98%.
温鸿英 朱定一 王明杰 乔卫 廖琳. 碳含量对新型Fe-Ni-Mn-Si-C系TWIP钢组织和力学性能的影响[J]. 钢铁, 2010, 45(6): 74-74.
WEN Hong-Ying . Effect of Carbon Content on Microstructure and Mechanical Properties of New Fe-Ni-Mn-Si-C TWIP Steel. Iron and Steel, 2010, 45(6): 74-74.
2010, Vol. 45 
