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首页> 美国政府科技报告 >Study of Structure Formation and Mechanical Behavior of Heat- Resistant Titanium Alloys with Eutectic Strengthening
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Study of Structure Formation and Mechanical Behavior of Heat- Resistant Titanium Alloys with Eutectic Strengthening

机译：共晶强化耐热钛合金的组织形成与力学行为研究

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This report results from a contract tasking Francevych Institute for Problems of Materials Science as follows: The Project will derive new scientific knowledge on in-situ titanium composite materials. This understanding is required to develop new improved composites achieving enhanced heat resistance, specific strength and stiffness as well as plasticity up to 3% elongation. This new knowledge will be obtained by studying in detail features of formation of structure in dependence on chemical composition and methods of alloy producing and processing as well as the relationship between microstructures and mechanical properties. Titanium in-situ composites with alpha-matrix, with alpha + beta- and beta-matrix as well as with intermetallic (Ti2AlNb, Ti3Al etc) matrix based on Ti-Si-X and Ti-B-X systems strengthened with complex boride, silicide and intermetallic phases are chosen. Structure and mechanical behavior of as-cast, plastically deformed and heat-treated alloys and their dependence on alloying, modifying, overheating and solidification rate will be subjected to characterization with electron microscopy and related techniques, and mechanical tests under bend and uniaxial tension in a wide temperature range embracing their brittle, brittle-to-ductile transition and ductile states.

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