Calculation of the yield and tensile strength in the alloying non quenched-tempered steel

Calculation of the yield and tensile strength in the alloying non quenched-tempered steel by the

electron structure parameters

LIU Zhilin; LIN Cheng; LIU Yan; GUO Yanchang

【期刊名称】《《自然科学进展（英文版）》》 【年(卷),期】2005(015)009

【摘要】Based on the phase transformations and strengthening mechanisms during roiling, the strength increments △σb under different strengthening mechanisms are calculated with the covalent electron number nA of the strongest bond in phase cells of alloys and the interface electron density difference △ρ matching the interface stress in alloys. The calculation method of the finishing rolling yield strength is proposed, and it is integrated with the proposed calculation formulas of strength of non quenched-tempered steel. Therefore,the general formulas to simultaneously calculate both the finishing rolling strength and the yield strength of the continuous casting-rolling and non quenched-tempered steel are given. Taken the pipeline steel X70 as an example, the predictions of properties and technological parameters are performed before production or online. 【总页数】6页(832-837)

【关键词】electron structure; non quenched-tempered steel; yield strength; prediction of properties