On the evaluation of uniaxial tensile and fracture properties of Ti‐6Al‐4V by spherical indentation tests with different calculation models
Li, Jianxun and Wang, Minghang and Li, Ying and Chen, Haofeng and Zhang, Tairui and Wang, Weiqiang (2023) On the evaluation of uniaxial tensile and fracture properties of Ti‐6Al‐4V by spherical indentation tests with different calculation models. Fatigue and Fracture of Engineering Materials and Structures, 46 (10). pp. 4053-4072. ISSN 8756-758X (https://doi.org/10.1111/ffe.14105)
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Abstract
This study assessed the efficacy of models in predicting uniaxial tensile and fracture properties of Ti-6Al-4V (TC4) alloys via spherical indentation tests (SITs). Four models, including one empirical, one numerical, and two analytical, were selected as representatives to evaluate uniaxial tensile properties. A series of experiments were conducted on TC4 alloys obtained from three manufacturing processes: selective laser melting (SLM), forging, and welding. The empirical model underestimated the material's strength, while the other models were mostly conservative, with errors within 10%, acceptable for engineering applications. However, although the incremental model is able to provide a desirable result, it may be inaccurate for calculating the yield strength. Thus, the source of errors in each model was thoroughly investigated through theoretical analysis and finite element calculations. Additionally, based on the results of optimal strength assessment, this study validated the effectiveness of the critical stress model to evaluate the fracture toughness of TC4 alloys.
ORCID iDs
Li, Jianxun, Wang, Minghang, Li, Ying, Chen, Haofeng ORCID: https://orcid.org/0000-0001-6864-4927, Zhang, Tairui and Wang, Weiqiang;-
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Item type: Article ID code: 86535 Dates: DateEvent31 October 2023Published25 July 2023Published Online10 July 2023Accepted28 April 2023SubmittedSubjects: Technology > Mechanical engineering and machinery Department: Faculty of Engineering > Mechanical and Aerospace Engineering
Strategic Research Themes > Ocean, Air and SpaceDepositing user: Pure Administrator Date deposited: 18 Aug 2023 09:44 Last modified: 25 Sep 2024 00:50 URI: https://strathprints.strath.ac.uk/id/eprint/86535