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A β-solidifying γ-TiAl alloys Ti-44.5Al-3.8Nb-1.0Mo-0.3Si-0.1B (at.%) sheet was fabricated by hot pack-rolling, which was carried out directly from the ingot without the hot forging. The microstructure and mechanical properties of as-rolled alloy sheets were investigated. The microstructure of as-rolled alloy sheet shows fine and uniform near gamma microstructure with the size in the range of 5μm∼15μm...
WC/Ni60B coatings were deposited by laser cladding with conventional WC size (WCm) or nanoscale WC (WCn). The components of the coatings are respectively 30%WCn/Ni60B, 15%WCm–15%WCn/Ni60B and 30%WCm/Ni60B so as to compare the effect of WCn content. Dry sliding wear tests of the coatings were conducted with a block on ring apparatus. The microstructure of the coatings and the phase transformation during...
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