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Defect structures in solution-grown single crystals of the intermetallic compound Ag3Sn

TitleDefect structures in solution-grown single crystals of the intermetallic compound Ag3Sn
Publication TypeJournal Article
Year of Publication2018
AuthorsYu, HB, Sun, Y, Meier, WR, Canfield, PC, Weinberger, CR, Lee, SW, Aindow, M
JournalJournal of Materials Science
Volume53
Pagination5317-5328
Date Published04
Type of ArticleArticle
ISBN Number0022-2461
Accession NumberWOS:000419950900049
Keywords(cu, ag)-sn, ag-cu alloys, deformation-behavior, fracture, Intermetallics, Materials Science, Nanoindentation, operative slip systems, sn, solder, solidification
Abstract

ve deformed during the decanting and subsequent handling processes. It is found that the crystals contain two types of lenticular deformation twins: {011}-type and {211}-type. These twins interpenetrate with no evidence of cracking at the intersections. The crystals also contain high densities of dislocations including long straight dipoles with b = +/- [010] and shorter curved segments and loops with b = [10 (2) over bar] and [001]. It is inferred that the dipoles are artifacts of specimen preparation that climb in from the cross-sectional sample surfaces, whereas the shorter segments are deformation debris. If a combination of twinning and dislocation glide of the types observed here were to form concurrently during general deformation of Ag3Sn, then they could provide the necessary number of independent deformation modes to accommodate an arbitrary plastic strain, which might help to explain the unusual ductility of this compound.

DOI10.1007/s10853-017-1901-0
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Complex States