In this study, quenching and tempering were employed to achieve the optimal match of strength toughness high-strength low-alloy (HSLA) 15CrNi3MoV steel. The effect temperature on microstructure evolution carbides precipitation steel was also investigated using scanning electron microscopy (SEM), a X-ray diffractometer (XRD) transmission (TEM). results showed that after at different temperatures...

The fracture behavior of a high-strength low-alloy steel subjected to tempforming at 873 K, 923 or 973 K was studied by means impact and bending tests. A decrease in temperature promoted the grain refinement resulting ultrafine grained lamellar-type microstructure with finely dispersed particles that led significant strengthening along an increase toughness. tempformed samples exhibited Charpy ...

Abstract Defects would occur in the weld joint of wheel rims during post-flash butt welding (FBW) process suffering from poor plasticity, which will deteriorate quality and lifecycle finish products. Therefore, FBW 440CL high-strength-low-alloy (HSLA) steel was physically simulated influence flash parameters on joints systematically evaluated this study. The results showed that width heat affec...