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首页> 外文会议>THERMEC 2011;International conference on processing manufacturing of advanced materials >IMPROVED PERFORMANCE IN AEROSPACE STRUCTURES WITH Ti AND Ni METAL MATRIX COMPOSITES.
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IMPROVED PERFORMANCE IN AEROSPACE STRUCTURES WITH Ti AND Ni METAL MATRIX COMPOSITES.

机译：钛和镍金属基复合材料改善了航空结构的性能。

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摘要

The external structures of supersonic vehicles are exposed in several critical regions to temperatures that could reach 1000°C. This limit is higher than any safe operative service not only for titanium alloys but also for commercial nickel superalloys. The simplest way to improve titanium and nickel matrices temperature behavior (i.e: strength and fatigue resistance) is to introduce a strengthening phase in its matrix. These class of materials are known as: Metal Matrix Composites (MMC). It is possible reinforce both titanium and nickel superalloys by mean of high temperature resistant ceramic fibers.The present paper deals with two subjects: the first is an original patented approach for Titanium MMC long fibers reinforced samples manufacturing by Roll-Diffusion-Bonding; the second deals with nickel metal matrix composites manufacturing and applications studies. The costs savings with respect to other thermo-mechanical processes are discussed. Moreover the second part of the paper deal with two "case-studies" demonstrating that it is possible to improve, significantly mechanical and fatigue resistance of simple 3D structures manufactured by mean of Diffusion Bonding.The manufacturing phases and laboratory chemical and mechanical characterizations results are reported and discussed.
机译：超音速飞行器的外部结构在几个关键区域暴露在可能达到1000°C的温度下。此限制不仅对钛合金而且对商业镍超合金都超过任何安全的操作服务。改善钛和镍基体温度行为（即强度和抗疲劳性）的最简单方法是在基体中引入强化相。这些类别的材料被称为：金属基复合材料（MMC）。可以通过耐高温陶瓷纤维来增强钛和镍超合金。第二部分涉及镍金属基复合材料的制造和应用研究。讨论了相对于其他热机械过程的成本节省。此外，本文的第二部分涉及两个“案例研究”，表明可以通过扩散结合来制造简单的3D结构，从而显着提高其机械和疲劳强度。制造阶段以及实验室的化学和机械表征结果如下：报告和讨论。

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