李仲昱, 王晓国, 戴益波, et al. Effect of Quenching and Tempering Treatment on Structure and Mechanical Properties of 22MnCrNiMo Steel Flash Weld Zone[J]. Special Steel, 2021, 42(3): 71-75.
李仲昱, 王晓国, 戴益波, et al. Effect of Quenching and Tempering Treatment on Structure and Mechanical Properties of 22MnCrNiMo Steel Flash Weld Zone[J]. Special Steel, 2021, 42(3): 71-75.DOI:
In order to study the effect of quenching and tempering treatment on the mechanical property of R4s (22MnCrNiMo) mooring chain steel flash weld zone
the double quenching is carried out at 880 ~ 960℃. to define optimum quenching temperature by changing the tempering temperature (560 ~ 640 °C)
and the holding time 20 ~ 40 min
the effect of tempering temperature and holding time on the mechanical property of steel is studied. The results show that with quenching and tempering treatment
all the fracture surfaces in the weld area are ductile fracture with high strength and good plasticity. Especially after 920 °C 30 min + 920°C 30 min quenching + 600 °C 30 min tempering treatment
the weld zone of steel has higher strength and best plasticity
the strength of steel is 1 071 MPa
the elongation is 17%
and the comprehensive performance reaches the optimal.