A titanium (Ti) plate was fabricated by selective laser melting (SLM) in vacuum to investigate the preheat effect. A melting and solidification dynamics of the Ti powder on the preheated baseplate was captured by high speed video camera. As the results, when a baseplate temperature was at room temperature of 25 degrees Celsius, sputtering was occurred while the laser irradiation. On the other hand, when the baseplate temperature was heat up to 150, 200 degrees Celsius, and amount of the sputtering was reduced. In order to investigate a material structure, the fabricated sample were cut into perpendicular and parallel direction to the laser scanning direction, In order to investigate a crystal orientation, the fabricated sample were cut into perpendicular and parallel direction to the laser scanning direction. After cutting, corrosion test was carried out to observe a crystal grain, grain boundary and direction of grain growth on the cross section of the sample with Crole solution such as this containing HF (Hydrofluoric acid) and H2NO3(nitric acid) solution. An angle between the perpendicular line of the baseplate and a growth direction were measured for cross section of perpendicular to the laser scanning direction. From the results, the angle was 59° at the 25 degrees Celsius. When the baseplate temperature heated up to 200 degrees Celsius, the growth angle was decreased to 24 degrees. As the results, it was revealed that the growth angle of crystal grains was controlled by baseplate temperature.
Skip Nav Destination
ICALEO 2017: 36th International Congress on Applications of Lasers & Electro-Optics
October 22–26, 2017
Atlanta, Georgia, USA
ISBN:
978-1-940168-14-2
PROCEEDINGS PAPER
Effect of baseplate temperature on sputter-generation for development of SLM in vacuum
Shuto Yamagata;
Shuto Yamagata
1
Graduate School of Engineering, Osaka University
, 1-1 Yamadaoka, Suita, Osaka, 565-0871, Japan
Search for other works by this author on:
Masahiro Tsukamoto;
Masahiro Tsukamoto
2
Joining and Welding Research Institute, Osaka University
, 11-1 Mihogaoka Ibaraki-shi Osaka, 567-0047, JAPAN
Search for other works by this author on:
Yuji Sato;
Yuji Sato
2
Joining and Welding Research Institute, Osaka University
, 11-1 Mihogaoka Ibaraki-shi Osaka, 567-0047, JAPAN
Search for other works by this author on:
Shin-ichiro Masuno;
Shin-ichiro Masuno
2
Joining and Welding Research Institute, Osaka University
, 11-1 Mihogaoka Ibaraki-shi Osaka, 567-0047, JAPAN
Search for other works by this author on:
Ritsuko Higashino;
Ritsuko Higashino
2
Joining and Welding Research Institute, Osaka University
, 11-1 Mihogaoka Ibaraki-shi Osaka, 567-0047, JAPAN
Search for other works by this author on:
Takaya Nishi;
Takaya Nishi
3
Graduate School of Science and Engineering, Kindai University
, 3-4-1, Kowakae, Higashiosaka-shi, Osaka 577-8502, JAPAN
Search for other works by this author on:
Yorihiro Yamashita;
Yorihiro Yamashita
4
Industrial Research Institute of Ishikawa
, 2-1 Kuratsuki Kanazawa-shi, Ishikawa 920-8203, JAPAN
Search for other works by this author on:
Hitoshi Nakano;
Hitoshi Nakano
3
Graduate School of Science and Engineering, Kindai University
, 3-4-1, Kowakae, Higashiosaka-shi, Osaka 577-8502, JAPAN
Search for other works by this author on:
Nobuyuki Abe
Nobuyuki Abe
2
Joining and Welding Research Institute, Osaka University
, 11-1 Mihogaoka Ibaraki-shi Osaka, 567-0047, JAPAN
Search for other works by this author on:
Published Online:
October 01 2017
Citation
Shuto Yamagata, Masahiro Tsukamoto, Yuji Sato, Shin-ichiro Masuno, Ritsuko Higashino, Takaya Nishi, Yorihiro Yamashita, Hitoshi Nakano, Nobuyuki Abe; October 22–26, 2017. "Effect of baseplate temperature on sputter-generation for development of SLM in vacuum." Proceedings of the ICALEO 2017: 36th International Congress on Applications of Lasers & Electro-Optics. ICALEO 2017: 36th International Congress on Applications of Lasers & Electro-Optics. Atlanta, Georgia, USA. (pp. 1102). ASME. https://doi.org/10.2351/1.5138139
Download citation file:
Sign In
You could not be signed in. Please check your credentials and make sure you have an active account and try again.