Investigation of Interfacial Reaction Products and Stress Distribution in Selective Laser Melted Al12Si/SiC Composite Using Confocal Raman Microscopy
MetadataShow full item record
© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, WeinheimThe interfacial reaction products and stress distribution in a selective laser melted Al12Si/SiC composite are studied using confocal Raman microscopy. Results reveal that needle-like Al4C3 and equiaxed Si are located at the interface between the Al matrix and SiC particles. This reaction is triggered by the high temperature within the SiC due to its high laser absorptivity. Raman frequency shifts to lower wavenumber are observed in both the SiC and Si, suggesting the existence of tensile stress within the interface. The tensile stress in SiC is higher in the build direction than in the direction perpendicular to the build direction. No such difference is observed in the Si. The reason is ascribed to the Gaussian distribution of the laser energy density and stress relief through the interfacial reaction.
Showing items related by title, author, creator and subject.
Joshi, J.; Nandakumar, K.; Evans, G.; Pareek, Vishnu; Gumulya, Monica; Sathe, M.; Khanwale, M. (2017)Gas–liquid two phase flows are widely encountered in industry. The design parameters include two phase pressure drop, mixing and axial mixing in both the phases, effective interfacial area, heat and mass transfer coefficients. ...
Abiogenic Fischer–Tropsch synthesis of methane at the Baogutu reduced porphyry copper deposit, western Junggar, NW-ChinaCao, M.; Qin, K.; Li, G.M.; Evans, Noreen; Jin, L.Y. (2014)Methane is widely developed in hydrothermal fluids from reduced porphyry copper deposits, but its origin remains enigmatic. The occurrence of methane in fluid inclusions at the Late Carboniferous Baogutu reduced porphyry ...
Gardner, S.; Raina, J.; Nitschke, M.; Nielsen, D.; Stat, Michael; Motti, C.; Ralph, P.; Petrou, K. (2017)Background: Climate change causes the breakdown of the symbiotic relationships between reef-building corals and their photosynthetic symbionts (genus Symbiodinium), with thermal anomalies in 2015-2016 triggering the most ...