Ultrafine-Grained Steel Produced by Warm Rolling and Annealing of Lath Martensite

摘要：

Steel plates with lath martensite microstructure were rolled up to 68% reduction at 673 K and then annealed at 473-973 K. The microstructure evolution was studied by using an optical microscope and a transmission electron microscopy. And the properties were investigated by using tensile tests and hardness tests. Results show that ultrafine grains+nano-carbides are obtained in the steel plates. The specimen annealed at 823 K has a good combination of strength and ductility. The tensile strength and total elongation are 1028 MPa and 7.2%, respectively. And the hardness is 338 Hv.

作者: Xin Zhao Xiaoling Yang

作者单位: The Six Department,Zhengzhou Institute of Aeronautics,Zhengzhou 450015,China Zhengzhou Zhongxing Basic Constructions Development Co.,Ltd Zhengzhou 450015,China

会议类型: 国际会议

会议名称: 5th International Conference on Nanomaterials by Severe Plastic Deformation(第五届剧烈塑性变形纳米材料国际会议)

会议地点: 南京

会议语种:英文

页码: 863-866

在线出版日期: 2011-03-01（万方平台首次上网日期，不代表论文的发表时间）