Effect of Zirconium addition on crack, microstructure and mechanical behavior of selective laser melted Al-Cu-Mg alloy

Selective laser melting (SLM) was used to fabricate Al-Cu-Mg alloy and Zirconium-modified Al-Cu-Mg alloy components. The hot-cracking phenomena during the SLM process was significantly reduced by the grain refining effect caused by the addition of Zr. Compared to the Al-Cu-Mg part, the Zr-modified A...

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Bibliographic Details
Published inScripta materialia Vol. 134; pp. 6 - 10
Main Authors Zhang, Hu, Zhu, Haihong, Nie, Xiaojia, Yin, Jie, Hu, Zhiheng, Zeng, Xiaoyan
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.06.2017
Subjects
Aluminum alloys
Mechanical properties
Microstructure
Selective laser melting
Zirconium
Mechanical properties
Aluminum alloys
Zirconium
Selective laser melting
Microstructure
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Summary:Selective laser melting (SLM) was used to fabricate Al-Cu-Mg alloy and Zirconium-modified Al-Cu-Mg alloy components. The hot-cracking phenomena during the SLM process was significantly reduced by the grain refining effect caused by the addition of Zr. Compared to the Al-Cu-Mg part, the Zr-modified Al-Cu-Mg part with the ultrafine grain exhibits increased yield strength (446±4.3MPa) and ultimate tensile strength (451±3.6MPa). These findings provide a basis for innovative alloy design for SLM. [Display omitted]
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2017.02.036