Author/Authors :
Tianfu، نويسنده , , Jing and Yuwei، نويسنده , , Gao and Guiying، نويسنده , , Qiao and Qun، نويسنده , , Li and Tiansheng، نويسنده , , Wang and Wei، نويسنده , , Wang and Furen، نويسنده , , Xiao and Dayong، نويسنده , , Cai and Xinyu، نويسنده , , Song and Xin، نويسنده , , Zhao، نويسنده ,
Abstract :
Nanocrystalline steel was developed by severe cold-rolling and subsequent annealing of low carbon steel with an original microstructure of lath martensite. X-ray diffraction (XRD) and transmission electron microscopy (TEM) indicated that steel with an average grain size of −20 to −300 nm can be obtained. The tensile tests revealed that the steel with grain size of −20 nm possess a strength of 2520 MPa and poor ductility at ambient temperature.
Keywords :
Severe cold-rolling , tensile strength , lath martensite , Nanocrystalline steel
