作者单位:WANG Zhang-ling(Shougang Jingtang iron&steel co.,Itd,Tangshan 063200,China;Material and Metallurgy School,Inner Mongolia University of Science and Technology,Baotou 014010,China)王章岭(首钢京唐钢铁公司,河北省唐山市曹妃甸工业区 063200;内蒙古科技大学材料与冶金学院,内蒙古包头014010)Duan Yun-bo,DONG Fang(Material and Metallurgy School,Inner Mongolia University of Science and Technology,Baotou 014010,China)段云波,董方(内蒙古科技大学材料与冶金学院,内蒙古包头014010)