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基于注射成形T15高速钢的烧结工艺与热处理工艺,对不同烧结与热处理工艺下T15高速钢的微观组织、密度和硬度等性能进行了测定与表征,着重探讨热处理工艺对T15高速钢微观组织与力学性能的影响。结果表明:随着真空烧结温度的升高,其力学性能呈现先升高后降低趋势;1 250℃时,T15高速钢达到最高密度ρ=8.204 g/cm~3,硬度值也为最高(59.9 HRC);对该烧结温度下所得样品进行热处理,发现退火后其硬度值降低;淬火后组织发生转变,硬度值回升;回火后组织结构稳定,保持了钢在淬火后所得的高硬度,其值为59.8 HRC,热处理后试样的综合性能得到了提高。
The microstructure, density and hardness of T15 high speed steel under different sintering and heat treatment processes were measured and characterized based on the sintering process and heat treatment process of T15 high speed steel by injection molding. The effects of heat treatment process on the microstructure and mechanical properties of T15 high- The impact of performance. The results show that with the increase of the vacuum sintering temperature, the mechanical properties of the T15 high-speed steel firstly increase and then decrease. At the temperature of 250 ℃, the highest density of T15 high-speed steel reaches 8.204 g / cm3 and the hardness value is the highest (59.9 HRC); the sample obtained at the sintering temperature was heat-treated and found that the hardness decreased after annealing; after quenching the structure changes, the hardness value rise; after tempering the tissue structure is stable, maintaining the steel obtained after quenching high hardness, which The value of 59.8 HRC, after heat treatment the overall performance of the sample has been improved.