Evolution of the Microstructure and Mechanical Properties of Copper during the Rolling-ECAP Process

被引：6

作者：

Lezhnev, S. N. ^{[1
]}

Volokitina, I. E. ^{[1
]}

Panin, E. A. ^{[1
]}

Volokitin, A. V. ^{[1
]}

机构：

[1] Rudnyi Ind Inst, Rudnyi 111500, Kazakhstan

来源：

PHYSICS OF METALS AND METALLOGRAPHY | 2020年 / 121卷 / 07期

关键词：

pressing; rolling; mechanical properties; microstructure; copper; PRESSURE; STEEL;

D O I：

10.1134/S0031918X20070054

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The effect of the new combined rolling-pressing technique of plastic deformation on the structure and mechanical properties of copper has been investigated in this work. The deformation was performed at room temperature and there were three cycles. Rolling-pressing technique was shown to significantly refine the structure of the commercial-purity copper. The strength of the copper workpieces increased by two times after three passes. The ultimate tensile strength and the yield strength increased from 235 to 482 MPa and from 198 to 405 MPa, respectively. The relative elongation and the relative reduction decreased by 8% and 7%, respectively. The ultrafine-grained structure with an average grain size of 2 mu m was revealed to be stable to subsequent annealing up to 150 degrees C.

引用

页码：689 / 693

页数：5

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