EFFECT OF RATE SENSITIVITY ON SLIP SYSTEM ACTIVITY AND LATTICE ROTATION

被引：95

作者：

CANOVA, GR ^{[1
]}

FRESSENGEAS, C ^{[1
]}

MOLINARI, A ^{[1
]}

KOCKS, UF ^{[1
]}

机构：

[1] UNIV CALIF LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545

来源：

ACTA METALLURGICA | 1988年 / 36卷 / 08期

关键词：

Crystallography - Mathematical Models - Physics - Solid State - Strain;

D O I：

10.1016/0001-6160(88)90298-2

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Viscoplastic constitutive models are used for crystals subjected to large strains and high strain-rates; they are based on the assumption that plastic strain occurs by viscous crystallographic slip. Rate-sensitivity and strain-rate effects on crystallographic shears and lattice rotations are investigated; it strain-rate sensitivities such as those observed at very high strain rates and at high temperatures may increase the total number of significantly active slip systems and decrease the amount of plastic spin. This leads to contrasted texture evolutions in tension and simple shear which are described.

引用

页码：1961 / 1970

页数：10

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