The Strength-Ductility Balance of an Ultrafine-Grained Medium-Carbon Steel Produced by Severe Plastic Deformation

摘要：

　　By processing with different high pressure torsion procedures, we obtained ultrafine-grained structures in medium-carbon steel and pure iron with different microstructural features.The UFG carbon steel exhibited a better balance of tensile strength and ductility in comparison with the UFG pure iron.The higher strength of the carbon steel is ascribed to the finer ferrite grain size, the dispersed carbide particles and the presence of alloying elements.The reasonable ductility of carbon steel is attributed to the maintaining of positive work hardening rate at high strain stage of tension, owing to the presence of intragranular particles and high fraction of high-angle boundaries.

关键词： Ultrafine-grained steel Strength-ductility combination Severe plastic deformation Work hardening

作者: Jiang-li Ning Lu Huang Ya-tong Zhang

作者单位: College of Metallurgy and Energy, North China University of Science and Technology, Tangshan 063009, Hebei, China

会议类型: 国际会议

会议名称: The 2016 China Functional Materials Technology and Industry Forum (2016中国国际功能材料大会暨第九届中国功能材料及其应用学术会议)

会议地点: 重庆

会议语种:英文

页码: 211-217

在线出版日期: 2016-07-25（万方平台首次上网日期，不代表论文的发表时间）