The generation of dislocations from twin boundaries and its effect upon the flow stresses in FCC metals

被引：49

作者：

Konopka, K ^{[1
]}

Mizera, J ^{[1
]}

Wyrzykowski, JW ^{[1
]}

机构：

[1] Warsaw Univ Technol, Fac Mat Sci & Engn, PL-02507 Warsaw, Poland

来源：

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | 2000年 / 99卷 / 1-3期

关键词：

plastic deformation; mechanical properties; twin boundaries; generation of dislocations;

D O I：

10.1016/S0924-0136(99)00434-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper is concerned with an analysis of the variation of flow stresses with the frequency of twin boundaries present in the microstructure of copper and austenitic steel. The increase of the frequency of twin boundaries results in a reduction of the flow stresses. This effect is explained in terms of dislocations being generated at the twin boundaries. The source of the dislocation generation from these boundaries was found during in situ strain experiments under the transmission electron microscope. The direct observations of dislocations generated from twin boundaries are presented in the paper. (C) 2000 Elsevier Science S.A. All rights reserved.

引用

页码：255 / 259

页数：5

共 20 条

[1]

BERNSTEIN J, 1977, HDB STAINLESS STEELS

[2] STRUCTURE OF HIGH-ANGLE GRAIN BOUNDARIES [J].

BRANDON, DG .

ACTA METALLURGICA, 1966, 14 (11) :1479-&

[3]

Charnock W., 1967, METAL SCI J, V1, P78

[4] MECHANICAL-PROPERTIES OF INTERNAL INTERFACES [J].

GRABSKI, MW .

JOURNAL DE PHYSIQUE, 1985, 46 (NC-4) :567-579

[5] THE DEFORMATION AND AGEING OF MILD STEEL .3. DISCUSSION OF RESULTS [J].

HALL, EO .

PROCEEDINGS OF THE PHYSICAL SOCIETY OF LONDON SECTION B, 1951, 64 (381) :747-753

[6] The effect of the twin boundaries on the yield stress of a material [J].

Konopka, K ;

Wyrzykowski, JW .

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 1997, 64 (1-3) :223-230

[7]

KONOPKA K, 1996, P 9 C EL MICR SOL EM

[8]

Kurzydlowski K.J., 1995, Quantitative Description of the Microstructure of Materials

[9]

KURZYDLOWSKI KJ, 1986, MATER SCI TECH SER, V2, P420, DOI 10.1179/026708386790328795

[10] STACKING-FAULT PROPAGATION FROM A COHERENT TWIN BOUNDARY [J].

MALIS, T ;

TANGRI, K ;

LLOYD, DJ .

PHILOSOPHICAL MAGAZINE, 1972, 26 (05) :1081-&

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