Deformation heating and its effect on grain size evolution during equal channel angular extrusion

被引：59

作者：

Semiatin, SL

Berbon, PB

Langdon, TG

机构：

[1] USAF, Res Lab, Mat & Mfg Directorate, AFRL,MLLM, Wright Patterson AFB, OH 45433 USA

[2] Rockwell Int Sci Ctr, Thousand Oaks, CA 91360 USA

[3] Univ So Calif, Dept Mat Sci, Los Angeles, CA 90089 USA

[4] Univ So Calif, Dept Engn Mech, Los Angeles, CA 90089 USA

来源：

SCRIPTA MATERIALIA | 2001年 / 44卷 / 01期

关键词：

equal channel angular extrusion; cold working; deformation heating; grain size;

D O I：

10.1016/S1359-6462(00)00565-0

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

An analysis of deformation heating during equal channel angular extrusion (ECAE) was validated and applied to interpret the effect of deformation rate on the grain sizes developed in aluminum and Al-Mg alloys during the ECAE process. From this work, the following conclusions are drawn: the shear-plane model developed to quantify heat transfer during orthogonal metal cutting provides a reasonable estimate of the deformation heating during ECAE; the effect on grain size of strain rate and deformation heating during ECAE under ambient conditions is minimal; and the effect of strain rate and deformation heating during ECAE at higher temperatures is less clear and should be investigated further.

引用

页码：135 / 140

页数：6

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