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Heat-Treated Microstructures of Ti-3Al-2.5V Tube for the Successive Process of Superplastic Hydroforming and Diffusion Bonding
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 Title & Authors
Heat-Treated Microstructures of Ti-3Al-2.5V Tube for the Successive Process of Superplastic Hydroforming and Diffusion Bonding
Bae, Geun-Soo; Lee, Sang-Yong;
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 Abstract
Heating experiments using the Ti-3Al-2.5V tube materials in a vacuum furnace have been performed to investigate a pertinent range of working temperatures and holding times for the development of the successive or simultaneous operation of superplastic hydroforming and diffusion bonding. The specimens were heated at , and respectively. Holding times at each temperature were varied up to 4 hours. Holding times longer than 1 hour were selected to consider the diffusion bonding process after or during the hydroforming process in the superplastic state. Grain sizes were varied from of the as-received tube to after heating at . Homogeneus granular microstructures could be maintained up to , while microstructures at showed no more granular type.
 Keywords
Ti-3Al-2.5V tube;Superplastic hydroforming;Diffusion bonding;Microstructure;
 Language
Korean
 Cited by
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