Effect of Temper Temperature on Microstructures and Mechanical Properties of 8CrV Saw Blade for Metallurgy
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.
Huixuan Zhang, Ye Han, Fuxiao Chen and Jiuba Wen
S. Q. Yuan and G. L. Liang, "Effect of Temper Temperature on Microstructures and Mechanical Properties of 8CrV Saw Blade for Metallurgy", Applied Mechanics and Materials, Vols. 117-119, pp. 760-763, 2012