Theoretical calculation of the finishing rolling elongation in non-quenched and tempered Si-Mn steel

作     者：LIU Zhilin and LIN Cheng (Department of Materials and Chemical Engineering, Liaoning Institute of Technology, Jinzhou 121001, China) 

作者机构：Department of Materials and Chemical Engineering Liaoning Institute of Technology Jinzhou 121001 China 

出 版 物：《Progress in Natural Science:Materials International》 (自然科学进展·国际材料(英文))

年 卷 期：2006年第16卷第1期

页      面：78-83页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

基　　金：Supported by National Natural Science Foundation of China (Grant No. 50471022) 

主　　题：electron structure parameters non-quenched and tempered steel elongation and calculation. 

摘      要：The finishing rolling elongation in the non-quenched and tempered Si-Mn steel is theoretically calculated using the cova lent electron number nA of the strongest bond in alloying phases and the interface electron density difference △ρ. Calculations show that the finishing rolling elongation of the non-quenched and tempered Si-Mn steel can be achieved by subtracting all the elongation decrements of solution strengthening, precipitation strengthening, and interface strengthening from the elongation of the refined α-Fe matrix. The calculated results of the finishing rolling tensile strength σb, the finishing rolling yield strength σs, and the finishing elongation δ of Q345 steel and BG420CL steel agree well with the measured values.