Effects of the grain shape and crystallographic texture on the grain-scale mechanical behavior of additively manufactured aluminum alloys

被引：37

作者：

Romanova, V ^{[1
]}

Zinovieva, O. ^{[2
]}

Balokhonov, R. ^{[1
]}

Dymnich, E. ^{[1
]}

Moskvichev, E. ^{[1
,3
]}

Filippov, A. ^{[1
]}

Lychagin, D. ^{[3
]}

机构：

[1] Inst Strength Phys & Mat Sci, Tomsk, Russia

[2] Univ New South Wales, Sch Engn & Informat Technol, Canberra, ACT, Australia

[3] Natl Res Tomsk State Univ, Tomsk, Russia

来源：

ADDITIVE MANUFACTURING | 2021年 / 48卷

关键词：

additive manufacturing; selective laser melting; aluminum alloys; grain structure; texture; micromechanics; Crystal plasticity; CPFEM simulations; CRYSTAL PLASTICITY; ALSI10MG ALLOY; HEAT-TREATMENT; AL-12SI ALLOY; LASER; MICROSTRUCTURE; STRESS; PARAMETERS;

D O I：

10.1016/j.addma.2021.102415

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The grain shape and texture effects in aluminum alloys manufactured by selective laser melting are studied numerically in terms of micromechanical simulations. The method of step-by-step packing is adopted to generate the three-dimensional grain morphology typical for these materials. Crystal plasticity finite element simulations of uniaxial tension are performed for two models with random and cube-textured columnar grains inherent in selective laser melting. Comparative analysis of the computational results shows a substantial difference between the microscale stress and strain fields. The presence of cube-textured columnar grains provides more homoge-neous stress-strain distributions inside the melt pools and unloads the adjacent regions of fine equiaxed grains, thus reducing high stress concentration in them.

引用

页数：11

共 36 条

[1] Microstructure, porosity and mechanical properties of selective laser melted AlSi10Mg [J].