Methodology for rapid additively manufactured titanium strength assessment utilizing electrical resistivity

摘要

Assessing material strength for additive manufacturing is provided. The method comprises calibrating a baseline electrical resistivity of a multi-phase additive material for a set dislocation density as a function of phase fraction and phase composition, wherein individual phases of the material have different electrical resistivity values. After the additive material has undergone a number of heating and cooling cycles during additive manufacturing the additive material is characterized for phase fraction, phase composition, and electrical resistivity. Dislocation density of the additive material is then determined according to electrical resistivity after additive manufacturing, accounting for effects of phase fraction and phase composition determined by characterization.