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Session: Poster pitches day 1
Session starts: Monday 26 June, 09:50
Presentation starts: 09:50

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Ryo Omura ()
Shinya Suzukake ()
Sayaka Maruta ()
Yuta Imai ()
Hiroshi Ishikawa ()
Akiko Kasami ()

Abstract:
The strength properties of AM materials are greatly changed by defects and microstructure. Especially, titanium alloy is easy to change surface and internal defect and microstructure by the difference of quality of the powder, molding equipment, molding parameter, type of heat treatment, and the mechanical property greatly changes by it. Therefore, the purpose of this study was to clarify experimentally the effects of defects and microstructure on the strength properties of AM titanium alloy formed by laser Powder Bed Fusion. The microstructure and internal and/or surface defects of additive manufactured titanium alloy Ti-6Al-4V are highly rely on the post heat treatment conditions including HIP and they have a strong relationship with fatigue properties. The relationship between internal defects and microstructure and role of defects in additive manufactured Ti-6Al-4V was evaluated by fatigue test and also detailed investigation based on fracture mechanics were conducted.