About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
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Symposium
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Heterostructured and Gradient Materials (HGM IV): Tailoring Heterogeneity for Superior Properties
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Presentation Title |
Size Effect Issue on the Fatigue Properties of Ti-6Al-4V Designed in Heterogeneous Harmonic Structure |
Author(s) |
Benjamin Guennec, Takayuki Ishiguri, Mie Ota Kawabata, Shoichi Kikuchi, Akira Ueno, Kei Ameyama |
On-Site Speaker (Planned) |
Benjamin Guennec |
Abstract Scope |
Lately, heterogeneous tailored microstructures are reported to enhance the mechanical properties of metallic materials toward its homogenous structure counterparts. Consequently, numerous works have been undertaken to analyze the related mechanism, proposing several heterogeneous microstructure patterns. In the present work, four-point bending fatigue properties of Ti-6Al-4V designed in heterogeneous harmonic structure, obtained via powder metallurgy route, are examined using two distinct specimen sizes. Furthermore, the present work also involves fatigue results from homogeneous counterparts for the sake of reference. Experimental results emphasize a clear effect of the specimen size on the fatigue strength of harmonic materials, whereas the homogeneous structure material shows similar strengths for both specimen size configurations. Refine analyses suggest that the specimen size alters the dislocation activity at the interface between coarse and fine grain regions of the harmonic structure, which implies consequences on the strain distribution over such heterogeneous structure. |
Proceedings Inclusion? |
Planned: |