Effect of Zirconium addition on crack, microstructure and mechanical behavior of selective laser melted Al-Cu-Mg alloy. (June 2017)

• Record Type: Journal Article
• Authors: Zhang, Hu; Zhu, Haihong; Nie, Xiaojia; Yin, Jie; Hu, Zhiheng; Zeng, Xiaoyan
• Is Part Of: Scripta materialia. Number 134(2017)
• Page Start: 6
• Page End: 10
• Publication Date: 2017-06
• Subjects: Selective laser melting -- Aluminum alloys -- Zirconium -- Microstructure -- Mechanical properties; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2017.02.036
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: 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 ± 4.3 MPa) and ultimate tensile strength (451 ± 3.6 MPa). These findings provide a basis for innovative alloy design for SLM. Graphical abstract: