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首页> 外文会议>World Conference on Titanium v.1; 20030713-20030718; Hamburg; DE >New Titanium Products via Powder Metallurgy Process
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New Titanium Products via Powder Metallurgy Process

机译：通过粉末冶金工艺生产的新钛产品

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摘要

The powder metallurgy (P/M) is an attractive methods for manufacturing titanium based materials and components. The prime reason is cost-effectiveness since it could eliminate expensive productive operations such as melting, casting, forging, and machining processes. On the other hand, the process enables to produce complex materials difficult to make via ingot metallurgy process. The key technology for P/M titanium parts production is to combine the ambivalence of net shaping with densification. Therefore, development of a true dense process only by metal-die compaction with pressure-less sintering is the most essential challenge for the cost saving. Another challenge is to create high performance materials exclusive to the P/M process. Some examples of new materials and processes as described above in Toyota have been introduced in this paper. Those are (1) titanium metal matrix composite for automobile engine valve, (2) metal-die wall lubricating method for warm compaction, which realizes ultra-high compacting pressure with no seizure, obtaining almost true density for any P/M titanium materials without HIP'ing, and (3) Gum Metal, a multi-functional titanium alloy obtained via a P/M process, which simultaneously shows ultra-low elastic modulus, super-elastic like properties, super cold workability without work hardening, and both Invar and Elinvar properties.
机译：粉末冶金（P / M）是制造钛基材料和组件的一种有吸引力的方法。主要原因是成本效益，因为它可以消除昂贵的生产操作，例如熔化，铸造，锻造和机械加工。另一方面，该工艺能够生产难以通过锭冶金工艺制造的复杂材料。 P / M钛零件生产的关键技术是将网状成形与致密化相结合。因此，仅通过金属模压实和无压烧结来开发真正的致密工艺是节省成本的最重要挑战。另一个挑战是创建P / M过程专有的高性能材料。本文介绍了丰田汽车上述新材料和新工艺的一些示例。它们是（1）用于汽车发动机气门的钛金属基复合材料，（2）用于热压的金属模具壁润滑方法，可实现超高压实压力而不会产生卡死现象，而无需使用任何P / M钛材料即可获得几乎真实的密度HIP'ing和（3）口香糖（Gum Metal），一种通过P / M工艺获得的多功能钛合金，它同时具有超低弹性模量，类超弹性，无需加工硬化的超冷加工性以及两者均具有Invar和Elinvar属性。

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