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INFLUENCE OF QUENCHING TEMPERATURE ON MECHANICAL PROPERTIES OF HIGH-SPEED STEEL

Liu Zuoren

Abstract

The mechanical property changes of high speed steel are studied with the varied quenching temperature It is found that steel hardness and red hardness are enhanced and toughness trends to decrease when the quenching temperature increases The results above are obtained when steels are quenched at different temper (W18Cr4V at 1260 ℃ 1290 ℃,W6Mo5Cr4V2 at 1210 1250 ℃) and then treated with three time temper at 560 ℃ for one hour The study shows that the grain refining improves the hardness and toughness of high speed steel The influence of quenching temperature on the grain size is also analyzed

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Key concepts: Quenching (fluorescence), Materials science, Metallurgy, Toughness, Refining (metallurgy), High-speed steel, Grain size, Composite material