Selective laser melting of an Al-Si-Mg-Cu alloy: feasibility and processing aspects

被引：14

作者：

Della Gatta, Roberta ^{[1
]}

Del Sol, Irene ^{[2
]}

Caraviello, Antonio ^{[3
]}

Astarita, Antonello ^{[1
]}

机构：

[1] Univ Naples Federico II, Dept Chem Mat & Ind Prod Engn, Ple Tecchio 80, I-80125 Naples, Italy

[2] Univ Cadiz, Fac Engn, Dept Mech Engn & Ind Design, Av Univ Cadiz 10, Puerto Real, Cadiz, Spain

[3] Sophia High Tech, St Anastasia, Italy

来源：

MATERIALS AND MANUFACTURING PROCESSES | 2021年 / 36卷 / 12期

关键词：

Selective; laser; melting; slm; alsi10mg; cu; mixture; process; parameters; power; energy; density;

D O I：

10.1080/10426914.2021.1906900

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A customized Al-Cu-Mg-Si alloy is successfully processed by selective laser melting. AlSi10Mg powder, used as a master alloy, has been mixed with pure Cu powder through a fluidized bed and the obtained powder mix was used as feedstock material for the printing process. To investigate the feasibility of the process and to discuss the effect of the process parameters, a two-step experimental campaign has been carried out: in the first batch of experiments the energy density has been varied to frame the processing window while in the second batch the energy density has been kept constant and the main process parameters have been varied to highlight their influence on the process. Density, porosity, and microhardness have been chosen as output to evaluate the success of the process. The microstructure and composition phase were studied through scanning electron microscopy and X-ray elemental mapping, respectively. A maximum relative density of 97% has been obtained while a predominant role of the laser beam power has been observed.

引用

页码：1438 / 1449

页数：12

共 40 条

[21] Analysis of processing parameters and characteristics of selective laser melted high strength Al-Cu-Mg alloys: From single tracks to cubic samples [J].