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Microstructure and mechanical properties of continuous equal channel angular pressed Titanium

Abstract : Applying a continuous equal channel angular pressing technique (ECAP-Conform), this work deals with the structure transformation and mechanical properties of a Grade 4 Ti. The microstructure evolution and mechanical properties were studied using electron backscatter diffraction; transmission electron microscopy and tensile tests. The results demonstrated that the microstructure evolution is ensured by the formation of low-angle deformation-induced boundaries during the initial stages of ECAP-Conform. With the number of ECAP-Conform passes increasing up to 10, a structure with an average grain size of 0.22 pm was achieved, and the ultimate strength increased 1.5 times higher with respect to the initial state.
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https://hal.univ-lorraine.fr/hal-01518050
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G S Dyakonov, C. F. Gu, Laszlo S. Toth, R. Z. Valiev, I P Semenova. Microstructure and mechanical properties of continuous equal channel angular pressed Titanium. 6th International Conference on Nanomaterials by Severe Plastic Deformation, Jun 2014, Metz, France. pp.012067, ⟨10.1088/1757-899X/63/1/012067⟩. ⟨hal-01518050⟩

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