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Material behavior of the hexagonal alpha phase of a titanium alloy identified from nanoindentation tests
Authors:AF Gerday  M Ben Bettaieb  L Duchêne  N Clement  H Diarra  AM Habraken
Institution:1. Department of Architecture, Geology, Environment, and Constructions, MS2F Division, University of Liège, Chemin des Chevreuils 1, 4000 Liège, Belgium;2. Département des Sciences des Matériaux et des Procédés (IMAP Department), Université Catholique de Louvain-la-Neuve, Place Sainte Barbe 2, 1348 Louvain-la-Neuve, Belgium;1. State Key Laboratory of Solidification Processing, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi''an 710072, China;2. School of Materials Science and Engineering, Chang''an University, Xi''an, Shaanxi 710061, China;1. Marine Additive Manufacturing Centre of Excellence (MAMCE), University of New Brunswick, Fredericton, NB E3B 5A1, Canada;2. CanmetMATERIALS, Natural Resources Canada, 183 Longwood Road South, Hamilton, ON L8P 0A5, Canada;1. State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an 710072, China;2. Beijing Aeronautical Manufacturing Technology Research Institute, Beijing 100024, China;1. Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China;2. University of Chinese Academy of Sciences, Beijing 100049, China;3. School of Materials Science and Engineering, University of Science and Technology of China, Shenyang 110016, China;4. AVIC Commercial Aircraft Engine, Co., LTD, Shanghai 200241, China
Abstract:This article focuses on the numerical modeling of nanoindentation tests performed on the hexagonal α phase of Ti-5553 alloy in order to identify its mechanical behavior. The main goal consists in determining the relative strength of the slip modes in the α phase of Ti-5553. This work was performed using an elastoviscoplastic crystal plasticity-based constitutive law. The difficulties in determining the slip systems that can be activated and their corresponding critical resolved shear stresses (CRSS) are discussed. Numerical predictions are compared to experimental nanoindentation curves.
Keywords:
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