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- W4288045887 abstract "An in-situ Al-TiB2 metal matrix composite was processed by a two-stage mechanical alloying (MA). At first Al and B powders were mixed and milled in a planetary ball mill for different durations. Similar procedure was followed for Al and Ti powders. The resultant milled powders containing Al and B from the first batch and Al and Ti from the second batch were mixed together and milled further for different durations. A part of the mixed powder was subjected to heat treatment at 400 °C for 1 h. Heat-treated samples were then cold compacted followed by sintering. Phase analysis of all the samples was carried out by x-ray diffraction (XRD) technique. Single Line Profile Analysis (SLPA) was used for computing the crystallite size and lattice strain of heat-treated samples. Microstructural studies were carried out using scanning electron microscope (SEM) attached with energy dispersive spectroscopic (EDS) facility. XRD patterns revealed the presence of TiB2 and intermetallics of Ti and Al in the heat-treated samples. SEM image of the heat-treated samples exhibited the presence of fused Al particles. Distribution of second phase particles was uniform as revealed by the x-ray maps. Nanoindentation tests were carried out to evaluate the nanomechanical properties like hardness and elastic moduli. Increase in hardness and elastic modulus values were observed in all the samples compared to monolithic Al because of the generation and incorporation of hard reinforcements and contribution from various strengthening mechanisms." @default.
- W4288045887 created "2022-07-27" @default.
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- W4288045887 date "2022-01-01" @default.
- W4288045887 modified "2023-09-23" @default.
- W4288045887 title "Processing, microstructure and mechanical properties of in-situ Al-TiB2 metal matrix composites" @default.
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- W4288045887 doi "https://doi.org/10.1016/j.matpr.2022.07.193" @default.
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