Atomistic simulations of deformation and fracture of α-Fe

被引：48

作者：

Hu, SY ^{[1
]}

Ludwig, M ^{[1
]}

Kizler, P ^{[1
]}

Schmauder, S ^{[1
]}

机构：

[1] Univ Stuttgart, Staatliche Materialprufungsanstalt, D-70569 Stuttgart, Germany

来源：

MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING | 1998年 / 6卷 / 05期

关键词：

D O I：

10.1088/0965-0393/6/5/005

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The stress-strain curves of alpha-Fe single crystals under uniaxial tensile deformation are obtained for the whole deformation process by atomistic molecular statics simulations. Effects of model sizes, boundary conditions, crystal orientations and displacement increment on the stress-strain curves are investigated. Various deformation evidence such as dislocation movement, dislocation piling up and twinning are clearly observed. The deformation and fracture characteristics of alpha-Fe and their dependence on the boundary conditions or the stress states are studied.

引用

页码：567 / 586

页数：20

共 17 条

[1] SUMMARY REPORT - COMPUTATIONAL ISSUES IN THE MECHANICAL-BEHAVIOR OF METALS AND INTERMETALLICS [J].

BASKES, MI ;

HOAGLAND, RG ;

NEEDLEMAN, A .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1992, 159 (01) :1-34

[2]

BRUNNER D, 1992, Z METALLKD, V83, P827

[3] A MOLECULAR-DYNAMICS SIMULATION OF CRACK-TIP EXTENSION - THE BRITTLE-TO-DUCTILE TRANSITION [J].

CHEUNG, KS ;

YIP, S .

MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING, 1994, 2 (04) :865-892

[4] BRITTLE-DUCTILE TRANSITION IN INTRINSIC FRACTURE-BEHAVIOR OF CRYSTALS [J].

CHEUNG, KS ;

YIP, S .

PHYSICAL REVIEW LETTERS, 1990, 65 (22) :2804-2807

[5]

Courtney TH., 1990, MECH BEHAV MAT

[6] SIMULATION OF PLASTIC-DEFORMATION OF SMALL IRON AND COPPER SINGLE-CRYSTALS [J].

DOYAMA, M .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1995, 102 (1-4) :107-112

[7] FRACTURE SIMULATIONS USING LARGE-SCALE MOLECULAR-DYNAMICS [J].

HOLIAN, BL ;

RAVELO, R .

PHYSICAL REVIEW B, 1995, 51 (17) :11275-11288

[8] CRACK-PROPAGATION IN BCC CRYSTALS STUDIED WITH A COMBINED FINITE-ELEMENT AND ATOMISTIC MODEL [J].

KOHLHOFF, S ;

GUMBSCH, P ;

FISCHMEISTER, HF .

PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES, 1991, 64 (04) :851-878

[9] Dynamic microcrack initiation in alpha-iron [J].

Machova, A .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1996, 206 (02) :279-289

[10] MOLECULAR DYNAMIC SIMULATION OF MICROCRACK INITIATION BY IMPACT LOADING [J].

MACHOVA, A .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1992, 149 (02) :153-165

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