Transformation toughening in NiAl observed via Monte-Carlo simulations

被引：5

作者：

Guenin, R ^{[1
]}

Clapp, PC ^{[1
]}

Zhao, Y ^{[1
]}

Rifkin, JA ^{[1
]}

机构：

[1] UNIV CONNECTICUT,CTR MAT SIMULAT,INST SCI MAT,STORRS,CT 06269

来源：

MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY | 1996年 / 37卷 / 1-3期

关键词：

transformation toughening; NIAl; stress-induced martensite; Monte-Carlo simulation;

D O I：

10.1016/0921-5107(95)01485-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Using a Landau free energy function derived from NiAl Embedded Atom Method interatomic potentials, we conducted Monte-Carlo simulations on a cracked body. Martensite develops around the crack tip in alternating variant plates. The resulting increase in toughness is estimated through an energy analysis, in terms of stress intensity factor reduction. Transformations with both a finite and a zero volume change transformation have also been studied to determine the importance of the dilatational versus shear effect on transformation toughening. The shear contribution was found to be dominant.

引用

页码：193 / 196

页数：4

共 10 条

[1] CONTINUUM THEORY OF DILATANT TRANSFORMATION TOUGHENING IN CERAMICS [J].

BUDIANSKY, B ;

HUTCHINSON, JW ;

LAMBROPOULOS, JC .

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES, 1983, 19 (04) :337-355

[2]

CLAPP PC, IN PRESS

[3]

CLAPP PC, 1993, MODELLING SIMUL MAT, V2, P551

[4] TOUGHENING OF BRITTLE SOLIDS BY MARTENSITIC TRANSFORMATIONS [J].

EVANS, AG ;

CANNON, RM .

ACTA METALLURGICA, 1986, 34 (05) :761-800

[5] PERSPECTIVE ON THE DEVELOPMENT OF HIGH-TOUGHNESS CERAMICS [J].

EVANS, AG .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1990, 73 (02) :187-206

[6]

GUENIN R, 1995, THESIS U CONNECTICUT

[7]

MEGUID SA, 1989, ENG FRACT MECH, P124

[8]

SHAO Y, 1993, THESIS U CONNECTICUT

[9]

Voter A. F., 1987, Characterization of Defects in Materials Symposium, P175

[10]

ZHAO Y, 1992, THESIS U CONNECTICUT

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