Freeform fabrication of Ti-Al alloys by 3D micro-welding

被引：14
|
作者：
Horii, Toshihide [1 ]
Kirihara, Soshu [1 ]
Miyamoto, Yoshinari [1 ]
机构：
[1] Osaka Univ, Joining & Welding Res Inst, Osaka 5670047, Japan
来源：
INTERMETALLICS | 2008年 / 16卷 / 11-12期
关键词：
Titanium aluminides; based on Ti3Al; Near-net-shape manufacturing; Rapid solidification processing;
D O I：
10.1016/j.intermet.2008.07.009
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
3D micro-welding (3DMW) is a newly developed rapid prototyping method for metals. It combines a micro-tungsten inert gas (TIG) welding with a layered manufacturing method, A tip of a thin metal wire is melted by a micro-TIG welder to form a small metal bead. By building up metal beads layer by layer under computer control, a 3D metal object is eventually formed. A wide variety of metals and alloys can be used. The Ti-Al based intermetallic alloys have superior mechanical and chemical properties. However, the forming process is difficult and costly. We have tried to fabricate 3D objects of the Ti-Al alloy system by using several thin Ti and Al wires. Some simple objects with a unique microstructure or graded composition are demonstrated. (C) 2008 Elsevier Ltd. All rights reserved.
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收藏
页码：1245 / 1249
页数：5
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