Direct Manufacturing of Titanium Parts by Cold Spray
Direct Manufacturing of Titanium Parts by Cold Spray
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DOI：
10.4028/www.scientific.net/msf.618-619.505
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发表时间：
2009-04
期刊：
影响因子：
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通讯作者：
M. Jahedi;S. Zahiri;S. Gulizia;B. Tiganis;C. Tang;D. Fraser
中科院分区：
文献类型：
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作者：
M. Jahedi;S. Zahiri;S. Gulizia;B. Tiganis;C. Tang;D. Fraser
钛作为工程材料具有重量轻、强度高、耐腐蚀、抗断裂等优异性能。然而，与材料和当前工艺技术相关的高成本不利于消费行业的大批量生产。看来近净成形制造必须用于制造钛和钛合金零件。研究人员正在探索几种近净形状技术。然而，这些技术大多数涉及熔化和凝固。每个新层开始时都是熔化的、凝固的，并且最终必须冷却到室温。钛等氧敏感材料需要在真空下加工。非常需要革命性的涂层和直接制造技术来将钛和钛合金的应用从高端、航空航天和生物医学扩展到低端消费者用途。看来冷喷涂技术可以为钛工业提供合适且具有成本效益的涂层和直接制造解决方案。 CSIRO 轻金属旗舰公司率先开发了使用冷喷涂制造钛零件的直接制造技术。介绍了冷喷涂钛在喷涂和热处理条件下的机械性能，并与锻制钛进行了比较。讨论了冷喷涂等直接制造无缝钛管的技术。
Titanium has excellent properties as an engineering material such as light weight, high strength and high resistance to corrosion and fracture. However, the high cost associated with the materials and current process technologies is not conducive to higher-volume production for consumer industry. It appears near net shape manufacturing has to be used to manufacture titanium and titanium alloys parts. Investigators are exploring several near net shape technologies. However, most of these technologies involve melting and solidification. Each new layer starts out molten, solidifies, and must eventually cool to room temperature. Oxygen sensitive material such as titanium needs to be processed under vacuum. There is a great need for revolutionary coating and direct Manufacturing technology to extend the application of titanium and titanium alloys from top end, aerospace and biomedical to lower end consumer use. It appears Cold Spray Technology can deliver a suitable and cost effective coating and direct manufacturing solution for titanium industry. CSIRO Light Metals Flagship has pioneered in developing direct manufacturing technologies to fabricate titanium parts using Cold Spray. Mechanical properties of Cold Spray titanium in as sprayed and heat treated conditions are presented and compared with wrought titanium. Some of technologies such as Cold Spray for direct manufacturing of seamless titanium pipes are discussed.