|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Multiscale Architectured Materials (MAM II): Tailoring Mechanical Incompatibility for Superior Properties
||Investigation of Effects of Microstructural Heterogeneity on Mechanical Properties Using Samples Prepared by Park Plasma Sintering
||Andy Godfrey, Kainan Zhu, Chenglu Zhang
|On-Site Speaker (Planned)
By control of the sintering conditions and powder characteristics is it possible to prepare microstructures in a fully recrystallized state with controlled grain size using spark plasma sintering. This has been used to investigate the effect of heterogeneity in grain size by mixing of powders with different average sizes. In one experiment aluminum powders with 1 μm and 6 μm average particle sizes were mixed with different weight fractions and tensile tests used to explore the relationship between mechanical strength ductility as a function of microstructural heterogeneity. In a separate experiment powders of copper and steel have been mixed to prepare a dual-phase microstructure in which the volume fraction, average size, and strength of each phase can be varied independently over a large range.