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

作　　者：LIU Zhilin LIN Cheng GUO Yanchang 

机构地区：[1]Department of Materials and Chemical Engineering, Liaoning Institute of Technology, Jinzhou 121001, China [2]The Technical Center of Benxi Iron and Steel Group Corporation, Benxi 117000, China

出　　处：《Progress in Natural Science:Materials International》2006年第8期859-867,共9页自然科学进展·国际材料（英文版）

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

摘　　要：Abstract The finishing rolling elongation δ of the alloying non-quenched and tempered steel is calculated with the covalent electron number nA of the strongest bond of the alloying phases and the interface electron density difference △p of the phase interfaces. The calculations show that the elongation δ^α-Fe of the matrix α-Fe decreases with roiling refinement, the elongation δ^α-Fe-C-M of solid solution phases （ M denotes alloying element） is inversely proportional to the covalent electron number nA^α-Fe-C-M of the strongest bond, the elongation decrement △δ^α-Fe/α-Fe-C-M caused by interface strengthening is directly proportional to the interface electron density difference △ρ^α-Fe/α-Fe-C-M, but the elongation decrements △δ^α-Fe/M and △δ^α-FeC/MC^C2 caused by dispersion strengthening and precipitation strengthening respectively are directly proportional to the ratio of the electron density difference △ρ^α-Fe/MC^C1 and △ρ^α-FeC/MC^C2 of the strengthening interfaces to △ρ^α-Fe/α-Fe-C of the basic interface α-Fe/α-Fe-C. Therefore, the finishing rolling elongation of the alloying non-quenched and tempered steel is considered to be subtracting all the elongation decrements of solution strengthening, interface strengthening, dispersion strengthening and precipitation strengthening from the elongation of the refined α-Fe matrix. The calculation formulas in this paper are integrated with the proposed ones of σs, σb and of αK delivered in another paper, the finishing rolling mechanical properties can be achieved and the calculated results agree well with the measured ones.完成卷非熄灭的 alloying 和 tempered 钢的延伸 &#948; 与共有原子价电子数字 n <SUB 是计算的 > alloying 的最强壮的契约的 </SUB> 分阶段执行，阶段的接口电子密度差别 &#916;&#961; 连接。计算证明 matriz -Fe 的延伸&#948;&#931;&#928;Fe&#931;&#928;与卷精炼减少，稳固的答案阶段的 elongtion &#948;&#931;&#928;Fe-C-M&#931;&#928;( M 表示 alloying 元素)与共有原子价电子数字 n <SUB 相反地成正比>最强壮的契约的</SUB>&#931;&#928;Fe-C-M&#931;&#928;，接口加强引起的延伸减少&#916;&#948;&#931;&#928;Fe/Fe-C-M&#931;&#928;与接口电子密度差别&#916;P&#931;&#928;Fe/Fe-C-M&#931;&#928;直接成正比，但是延伸减少 &#916;&#948;&#931;&#928;Fe/M&#931;&#928;C <SUP > C </SUP>1 和 &#916;&#948;&#931;&#928;FeC/M&#931;&#928;C <SUP >分散加强并且 降水...引起的 C </SUP>2 分别地与电子密度差别&#916;p&#931;&#928;&#948;Fe/MCC1&#931;&#928;和 &#916;&#948;&#931;&#928;FeC/M&#931;&#928;C <SUP 的定量直接成正比>到基本接口 -Fe/-Fe-C 的&#916;p&#931;&#928;Fe/Fe-c&#931;&#928;的加强的接口的 C </SUP>2 。因此，完成卷非熄灭的 alloying 和 tempered 钢的延伸被认为解决方案加强，加强的接口，分散加强和从精制 -Fe matriz 的延伸加强的降水的所有延伸减少到减去。在这篇论文的计算公式是综合的与建议了 &#963;<SUB 之一 > S </SUB>,&#963;<SUB > b </SUB > 并且在另一份报纸交付的 &#963;&#934;&#954;&#934;&#931;&#928;&#931;&#928; ，完成卷机械性质能是 acheived，计算结果与测量的同意很好。

关 键 词：electron structure parameters alloying non-quenched and tempered steel ELONGATION theoretical calculation 

分 类 号：TG111.1[金属学及工艺—物理冶金]