Effect of Temper Temperature on Microstructures and Mechanical Properties of 8CrV Saw Blade for Metallurgy

Shao Qiang Yuan; Guo Li Liang

doi:10.4028/www.scientific.net/AMM.117-119.760

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Effect of Temper Temperature on Microstructures and Mechanical Properties of 8CrV Saw Blade for Metallurgy
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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 117-119Effect of Temper Temperature on Microstructures...

Effect of Temper Temperature on Microstructures and Mechanical Properties of 8CrV Saw Blade for Metallurgy

Abstract:

Using metallographic observation and mechanical measurement, metallurgical saw blade made of 8CrV steel was continuously tempered at 300 °C-460 °C.The experimental results demonstrated that: with the increasing tempered temperature, the quenched martensite will transform into the tempered martensite, tempered martensite+tempered sorbite and tempered sorbite; the strength of samples declined continuously but yield ratio increased a little. At about 420°C, the temper brittleness occurred and obvious properties change happened of the samples, such as impact value, reduction area and elongation percent. However, the hardness values enhanced at this temperature.