|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Deformation and Transitions at Interfaces
||The Influence of Second-phase Distribution on Dynamic Damage and Spall Strength
||David R Jones, Saryu J Fensin, Daniel T Martinez, Carl P Trujillo, George T Gray, Ellen K Cerreta
|On-Site Speaker (Planned)
||David R Jones
We present a series of experiments studying the influence of the distribution of a second phase in a material on its response to dynamic tensile loading, or spall fracture. Investigation with high purity metals has shown that the void nucleation, growth and coalescence process can preferentially initiate at microstructural features such as grain boundaries, inclusions and vacancies. Similarly, a second phase can introduce nucleation sites and affect the spall resistance. Here, we have loaded two samples of Cu-1%Pb in plate impact experiments; with the lead either distributed in long bands or homogenously though the copper. An increased amount of damage was observed in the homogenized sample, due to the greater number of Cu-Pb interfaces present.