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Proceedings Paper

Effect on beam profile of Ti alloy plate fabrication from powder by sputter-less selective laser melting
Author(s): Yuji Sato; Masahiro Tsukamoto; Yorihiro Yamashita; Kensuke Yamashita; Shuto Yamagata; Ritsuko Higashino; Nobuyuki Abe
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Paper Abstract

Titanium alloy (Ti-6Al-4V) ,which has a crystal orientation of α+β type, are clinical employed for an artificial bone and a hard tissue implant for human body because of light, nonmagnetic, weather resistance and biocompatibility, but it is difficult to form a complicated structure, as a bionic structure, owing to a difficult-to-cut machine material. Thus, titanium alloy plates were fabricated by selective laser melting (SLM) in vacuum. Melting and solidification process were captured with high speed video camera, it was found that sputter was depended on the surface roughness. The sputter-less fabrication for SLM in vacuum was developed to minimize the surface roughness to 0.6μm at the laser scanning speed of 10mm/s. It was also determined that crystal orientation was evaluated with X-ray diffraction (XRD). It was recorded from the powder peaks of α (1011), α (0002), α (1010), and α (1012) that the crystal orientation is composed mainly of martensitic alpha by XRD analysis. Diffraction peaks corresponding to β (110) were detected in vacuum SLM processed samples.

Paper Details

Date Published: 24 February 2017
PDF: 5 pages
Proc. SPIE 10095, Laser 3D Manufacturing IV, 100950Z (24 February 2017); doi: 10.1117/12.2251393
Show Author Affiliations
Yuji Sato, Osaka Univ. (Japan)
Masahiro Tsukamoto, Osaka Univ. (Japan)
Yorihiro Yamashita, Industrial Research Institute of Ishikawa (Japan)
Kensuke Yamashita, Osaka Univ. (Japan)
Shuto Yamagata, Osaka Univ. (Japan)
Ritsuko Higashino, Osaka Univ. (Japan)
Nobuyuki Abe, Osaka Univ. (Japan)

Published in SPIE Proceedings Vol. 10095:
Laser 3D Manufacturing IV
Bo Gu; Henry Helvajian; Alberto Piqué; Corey M. Dunsky; Jian Liu, Editor(s)

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