ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Crystalline precipitates in a bulk-metallic-glass (BMG) braze were investigated with anintense x-ray microbeam. The precipitates were found in the Pd40Cu30P20Ni10 BMG braze matrixafter joining crystalline Ti-6Al-7Nb. However, the role (if any) played by the precipitates inimproving the mechanical bond of the BMG/crystalline joint is unknown. X-ray microdiffractionand microfluorescence measurements from small sample volumes were made with an ~ 0.5 x 0.5μm2 beam. Spatially-resolved Laue diffraction and x-ray fluorescence measurements were madeon several second-phase crystals within the BMG matrix. Although precipitate crystals with theobserved compositions were anticipated to be predominantly hexagonal, one of the crystals wasfound to be cubic or tetragonal. The instrumentation includes capabilities for 3D depth-resolvedmeasurements of crystal structure and for fluorescence analysis of elemental composition. Depthprofiling gave information about the grain distribution and morphology in the BMG matrix
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/15/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.539-543.1983.pdf
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