✦ LIBER ✦

Research on Preheating of Titanium Alloy Powder in Electron Beam Melting Technology

✍ Scribed by He Weiwei; Jia Wenpeng; Liu Haiyan; Tang Huiping; Kang Xinting; Huang Yu

Book ID: 119639443
Publisher: Elsevier
Year: 2011
Weight: 612 KB
Volume: 40
Category: Article
ISSN: 1875-5372
DOI: 10.1016/s1875-5372(12)60014-9

No coin nor oath required. For personal study only.

✦ Synopsis

The titanium alloy powder preheating process in electron beam melting (EBM) was investigated, and the connection mode among powder particles after preheating was analyzed. The results show that when the Ti6Al4V powder is preheated to above 600 °C during EBM process, a powder aggregation is formed. The sintering mechanism is that small particles partially or completely melt and play the role of binder to bond the majority of big particles together; this will be not only to help the particles to hold their places, withstanding the impact force of electron beam, but also to prevent the spheroidization effect in the prototyped surface. Using Ti6Al4V powder as starting material and adopting complete preheating of the powder layer, the column samples with full interlayer bonding and excellent mechanical properties are produced.

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