In-situ X-ray tomography analysis of the evolution of pores during deformation of AlSi10Mg fabricated by selective laser melting

被引：32

作者：

Samei, Javad ^{[1
,2
]}

Amirmaleki, Maedeh ^{[3
]}

Dastgiri, Mohammad Shirinzadeh ^{[1
]}

Marinelli, Carlo ^{[1
,4
]}

Green, Daniel E. ^{[1
]}

机构：

[1] Univ Windsor, Dept Mech Automot & Mat Engn, Windsor, ON, Canada

[2] McMaster Univ, Dept Mat Sci & Engn, Hamilton, ON, Canada

[3] Univ Toronto, Dept Mech & Ind Engn, Toronto, ON, Canada

[4] Politecn Torino, DISAT Dept Appl Sci & Technol, Turin, Italy

来源：

MATERIALS LETTERS | 2019年 / 255卷

关键词：

Al10SiMg; Fracture; Porosity; Selective laser melting; X-ray computed tomography; STRENGTH;

D O I：

10.1016/j.matlet.2019.126512

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

AlSi10Mg is an interesting structural material due to its high specific mechanical properties, and good weldability which makes it a good candidate for additive manufacturing by selective laser melting. In this paper, the evolution of pores is visualized and quantified in an AlSi10Mg fabricated by selective laser melting using in-situ tension coupled with X-ray computed tomography. Graphical models were produced in order to visualize the evolution of pores, and the volume fraction, density, and mean diameter of pores were determined at each stage of deformation. Significant coalescence of pores was found during post-uniform elongation. Dimples on the fracture surfaces indicate ductile fracture. (C) 2019 Elsevier B.V. All rights reserved.

引用

页数：4

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