薛伟江, 屈小波, 王军, et al. Effects of Self-Tempering Temperature on Microstructure and Performance of Vanadium and Titanium Microalloyed 45MnVTi Non Quenched and Tempered Steel[J]. Special Steel, 2021, 42(6): 83-86.
薛伟江, 屈小波, 王军, et al. Effects of Self-Tempering Temperature on Microstructure and Performance of Vanadium and Titanium Microalloyed 45MnVTi Non Quenched and Tempered Steel[J]. Special Steel, 2021, 42(6): 83-86.DOI:
The structure and mechenical properties of Φ52 mm 45MnVTi steel finished rolling at 917~922 ℃ and water-cooling-self-tempering with 680~830 ℃have been tested and researched.Results show that the microstructure of asprepared steel consists of ferrite and pearlite
with the decrease of self-tempering temperature
the yield strength and tensile strength of steel gradually increase
and toughness increases at first and then decreases. When the range of self-tempering temperature is 750 to 770 ℃
the microstructure of steel products is fine ferrite and pealite
and the test steel average value of tensile Strength 841 MPa
yield Strength 547.5 MPa
impact energy 50.5 J with an optimal match between the strength and toughness of steel and pearite lamellar spacing 2.39 μm