Damage mechanism of AZ61-F Mg alloy with nano-Al2O3 particles

被引：4

作者：

Besterci, M. ^{[2
]}

Ivan, J. ^{[3
]}

Huang, S. -J. ^{[4
]}

Velgosova, O. ^{[1
]}

Lin, B. Z. ^{[4
]}

Hvizdos, P. ^{[2
]}

机构：

[1] Tech Univ Kosice, Fac Met, Dept Mat Sci, Kosice 04200, Slovakia

[2] Slovak Acad Sci, Inst Mat Res, Kosice 04353, Slovakia

[3] Slovak Acad Sci, Inst Mat & Machine Mech, Bratislava 83102, Slovakia

[4] Natl Taiwan Univ Sci & Technol, Dept Mech Engn, Taipei 106, Taiwan

来源：

KOVOVE MATERIALY-METALLIC MATERIALS | 2011年 / 49卷 / 06期

关键词：

AZ61-F Mg-Al2O3; in-situ tensile test in SEM; model of fracture mechanism; FRACTURE MECHANISM; CU-AL2O3; SYSTEM; HEAT-TREATMENT; MICROSTRUCTURE; REINFORCEMENT; DEFORMATION; DUCTILITY; EVOLUTION; BEHAVIOR; FAILURE;

D O I：

10.4149/km_2011_6_451

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Deformation of magnesium alloy AZ61-F with 1 wt.% of Al2O3 was analysed by "in-situ tensile test in SEM" and a model of fracture mechanism was suggested. Microstructure of the experimental materials is heterogeneous with grain size of 50 mu m. It has been shown that during tensile deformation the failure of Mg17Al12 particles appeared and at the same time decohesion of the matrix-Al2O3 particles occurred as a result of different physical properties. The increase of stress caused the cracks propagation into the specimen and simultaneously the large damaged Mg17Al12 particles contributed to the fracture process. Fracture surface had transcrystalline ductile character.

引用

页码：451 / 455

页数：5

共 20 条

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