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

陨石具有最独特，最美丽的微结构之一，即Widmanstätten结构。它由大而细长的带子组成，形成了复杂的晶体金属八面体花边。这种结构使陨石成为展示使用高速纳米压痕的机械相图功能的理想案例。在这项工作中，使用约100,000个压痕绘制了Taza陨石的机械性能和成分，以统计学方式确定各个相的性能。在该陨石中表征了五个微结构相：Kamacite，Plessite，Tetataenite，Cloudy Zone和Schreibersite。使用EDX测量确认了机械相识别，并且实现了EDX与大规模压痕图的第一个直接的点对点关联。机械相图在两个相位上均显示出优于EDX的相衬。压痕特性图或使用2D直方图的机械相图被用于可视化和统计表征相，并确定它们之间的关系趋势。