The X-ray characterization of the ultrafine-grained Cu processed by different methods of severe plastic deformation

被引：40

作者：

Alexandrov, IV ^{[1
]}

Zhang, K ^{[1
]}

Kilmametov, AR ^{[1
]}

Lu, K ^{[1
]}

Valiev, RZ ^{[1
]}

机构：

[1] ACAD SINICA,INST MET RES,STATE KEY LAB RSA,SHENYANG 110015,PEOPLES R CHINA

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1997年 / 234卷

关键词：

X-ray analysis; ultrafine-grained materials; severe plastic deformation;

D O I：

10.1016/S0921-5093(97)00135-4

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The results of structural investigations of massive ultrafine-grained (UFG) Cu samples processed by severe plastic deformation (SPD) by torsion straining under high pressure, equal channel angular CECA) pressing and powder consolidation by torsion under high pressure were considered. X-ray patterns of the materials under study displayed common features consisting in significant broadening and changes in a profile of X-ray peaks and some increase in background integrated intensity X-rays scattering. It was concluded that dislocation distribution has some specific features. Assumptions were made about mechanisms of UFG structure formation and about the reasons causing an increase in mechanical properties of the investigated materials due to SPD. (C) 1997 Elsevier Science S.A.

引用

页码：331 / 334

页数：4

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