| タイトル | Freeform fabrication of titanium by 3D micro welding |
| その他のタイトル | 3Dミクロ溶接によるチタンの自由形造形 |
| 著者（日） | 宮本 欽生; 寺久保 匡志; Oh, Janghwan; 桐原 聡秀; 松浦 清隆; 工藤 昌行 |
| 著者（英） | Miyamoto, Yoshinari; Terakubo, Masayuki; Oh, Janghwan; Kirihara, Soshu; Matsuura, Kiyotaka; Kudo, Masayuki |
| 著者所属（日） | 大阪大学接合科学研究所; 大阪大学 大学院; 大阪大学接合科学研究所; 大阪大学接合科学研究所; 北海道大学 大学院工学研究科; 北海道大学 大学院工学研究科 |
| 著者所属（英） | Joining and Welding Research Institute, Osaka University; Osaka University Graduate School; Joining and Welding Research Institute, Osaka University; Joining and Welding Research Institute, Osaka University; Hokkaido University Graduate School of Engineering; Hokkaido University Graduate School of Engineering |
| 発行日 | 2004-09 |
| 刊行物名 | Transactions of JWRI
Transactions of JWRI |
| 巻 | 33 |
| 号 | 1 |
| 開始ページ | 33 |
| 終了ページ | 38 |
| 刊行年月日 | 2004-09 |
| 言語 | eng |
| 抄録 | A novel freeform fabrication method for metals, named 3D Micro Welding (3DMW), has been developed. It is a combined process of the freeform fabrication system with TIG (Tungsten Inert Gas) welding. The formation of titanium micro beads was investigated with respect to the diameter, height, and contact angle on the titanium substrate as functions of arc discharge current and two different shielding gases. The Ar-4 percent H2 gas was more effective in preventing oxidation of beads than Ar gas. Simple 3D titanium objects with arch, number and pyramidal shapes were formed. Needle form crystals of beta-phase titanium precipitated in the alpha- phase titanium matrix doing bead formation by rapid cooling. The interface between a titanium bead and titanium substrate was joined well without cracks or pores. |
| キーワード | titanium; TIG welding; micro-welding; three dimensional object; CAD/CAM system; welded joint; microstructure; phase transformation; チタン; TIG溶接; ミクロ溶接; 3次元物体; CAD/CAMシステム; 溶接接合; 微視構造; 相転移 |
| 資料種別 | Technical Report |
| ISSN | 0387-4508 |
| SHI-NO | AA0047528006 |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/55566 |
