Features of dendritic structures in a metallic fragment of lunar material

Details Features of dendritic structures in a metallic fragment of lunar material Features of dendritic structures in a metallic fragment of lunar material

Jun 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977izssr......174m&link_type=abstract

Akademiia Nauk SSSR, Izvestiia, Metally, May-June 1977, p. 174-177. In Russian.

Computer Science

Crystallization, Dendritic Crystals, Iron Alloys, Lunar Rocks, Meteoritic Composition, Close Packed Lattices, Grain Boundaries, Hexagonal Cells, Microstructure, Recrystallization

Scientific paper

Elements of primary and secondary structure detected in lunar regolith included: recrystallized grains, elements subjected to shear forces, and particles exhibiting dendritic morphology. The dendritic regions are local and of homogeneous composition in one specimen (16 034-104), with the dendrites hosted in a metallic matrix. Martensite of dendritic morphology, Neumann bands in a dendritic pattern, and dendrites formed in crystallization from a melt show up. The features are attributed to crystallization following local melting, induced in turn by microimpacts and splashes of impacting meteoritic material. The local heating temperature is estimated at not below 1200 C.

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