Effect of hot-rolled coiling temperature on microstructure，properties and textures of micro-carbon deep-drawing DP steel
YE Jie-yun1，AN Gui-huan1， LIU Shan-shan1，LIU Wei-ning2，WANG Zhi-gang1
（1. School of Material Science and Engineering，Jiangxi University of Science and Technology，Ganzhou 341000，Jiangxi，China 2. AC Construction Branch，State Grid Corporation of China，Beijing 100031，China）
Abstract：In order to study the charge rule of texture on deep-drawing DP steel， effect of hot-rolled coiling temperature on microstructure， properties and textures of micro-carbon deep drawing DP steel were studied by OM，TEM and XRD technical. The research shows that： microstructure of hot-rolled plates is mainly composed of ferrite and pearlite. With the increasing of coiling temperature， the grain size of ferrite increased slightly， and elongation of hot-rolled plate enhanced gradually. The optimum precipitation temperature of Mo-based carbide in hot-rolled plate is 700 ℃. A higher volume fraction (4%) of martensite and finer (11.7 μm) ferrite observed in annealed sheet on 700 ℃ coiling compared with 650 and 750 ℃. Meanwhile， the strongest 〈111〉//ND fiber texture and weakest {001}〈110〉 texture achieved in annealed sheet. The tensile strength and r value of annealed sheet on 700 ℃ coiling reach to 455 MPa and1.5， respectively.
叶洁云，安桂焕，刘姗姗，刘蔚宁，汪志刚. 卷取温度对深冲DP钢组织性能及织构的影响[J]. 钢铁, 2016, 51(12): 73-79.
YE Jie-yun，AN Gui-huan， LIU Shan-shan，LIU Wei-ning，WANG Zhi-gang. Effect of hot-rolled coiling temperature on microstructure，properties and textures of micro-carbon deep-drawing DP steel. Iron and Steel, 2016, 51(12): 73-79.
2016, Vol. 51 
