Experimental Correlation of Mechanical Properties of the Ti-6Al-4V Alloy at Different Length Scales
This article focuses on a systematic study of a Ti-6Al-4V alloy in order to extensively characterize the main mechanical properties at the macro-, micro- and submicrometric length scale under different stress fields. Hardness, elastic modulus, true stress-strain curves and strain-hardening exponent are correlated with the intrinsic properties of the alpha- and beta-phases that constitute this alloy. A systematic characterization process followed, considering the anisotropic effect on both orthogonal crystallographic directions, as well as determining the intrinsic properties for the alpha-phase. An analytical relationship was established between the flow stress determined under different stress fields, testing geometries and length scales, highlighting that it is possible to estimate flow stress under compression and/or tensile loading from the composite hardness value obtained by instrumented nanoindentation testing.
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|Experimental Correlation of Mechanical Properties of the Ti-6Al-4V Alloy at Different Length Scales
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