Mechanical phase mapping of the Taza meteorite using correlated high?speed nanoindentation and EDX

Meteorites have one of the most unique and beautiful microstructures, Widmanstätten structure. This consists large, elongated bands which form an intricate octahedral lace crystalline metal. structure makes meteorites ideal case to demonstrate capabilities mechanical phase mapping using high?speed nanoindentation. In this work, properties composition Taza meteorite were mapped ~100,000 indentations statistically determine individual phases. Five microstructural phases characterized in meteorite: Kamacite, Plessite, Tetrataenite, Cloudy Zone, Schreibersite. Mechanical identification was confirmed EDX measurements, first direct, point?to?point correlation large?scale indentation maps achieved. showed superior contrast two An property map or a 2D histogram used visualize characterize identify trends their relationships.