RECOVERED ELASTIC AND PLASTIC STRAINS AT RESIDUAL MICROINDENTATIONS IN AN MGO CRYSTAL

被引：31

作者：

HAMMOND, BL ^{[1
]}

ARMSTRONG, RW ^{[1
]}

机构：

[1] UNIV MARYLAND,DEPT MECH ENGN,COLLEGE PK,MD 20742

来源：

PHILOSOPHICAL MAGAZINE LETTERS | 1988年 / 57卷 / 01期

关键词：

CRYSTALS - Dislocations - Elasticity - Fracture mechanics - Plasticity - SOLIDS - Deformation;

D O I：

10.1080/09500838808227796

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Elastic and plastic unloading effects are described for aligned diamond pyramid indentations imposed on a (001) MgO crystal surface. Substantial elastic recovery effects are explained in terms of the theoretical Hertzian behavior for a ball indentation test. Limited reversal of the plastic deformation field occurs, involving dislocation processes which first produce an extensive amount of slip and cracking during the loading portion of the indentation cycle.

引用

页码：41 / 47

页数：7

共 16 条

[1]

Armstrong R.W., 1986, MICROINDENTATION TEC, P109

[2]

ARMSTRONG RW, 1974, NEW ZEAL J SCI, V17, P429

[3] LATTICE MISORIENTATION AND DISPLACED VOLUME FOR MICROHARDNESS INDENTATIONS IN MGO CRYSTALS [J].