Microstructural gradients in Ti-3Al-8V-6Cr-4Zr-4Mo for excellent HCF strength and toughness

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Technical Univ of Brandenburg at, Cottbus, Cottbus, Germany [1 ]
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Mater Sci Eng A Struct Mater Prop Microstruct Process | / 1-2卷 / 146-149期
关键词：
Annealing - Crack propagation - Fatigue of materials - Fracture toughness - Metallographic microstructure - Rolling - Strength of materials;
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摘要：
Deep-rolling with subsequent annealing was performed on solution heat treated Ti-3Al-SV-6Cr-4Zr-4Mo to develop microstructural gradients in the notch root. Annealing treatments were varied to a wide extent to evaluate optimum conditions for excellent fatigue performance and outstanding fracture toughness of a component. Such a property combination cannot be achieved by non-gradient microstructures.
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