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The W–5wt% Cr alloy with a relative density of 98.5% was fabricated by the spark plasma sintering at 1700°C, subsequently solid solution treated at 500, 800 and 1100°C for varying times, and then quenched to room temperature. The microstructure and Vickers microhardness were characterized. It was found that after solid solution the grain size increased from 2 to 3.8μm. The samples annealed at 800°C...
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