【摘 要】
：
According to the technical specifications of 700MPa high strength automotive axle tube steel,a low cost of 0.07%C+1.5%Mn+0.05%Nb+0.10%Ti was designed.The high strength mainly relies on grain refinemen
【机 构】
：
State Key Laboratory of Rolling and Automation,Northeastern University,Shenyang 110004,Liaoning,Chin
论文部分内容阅读
According to the technical specifications of 700MPa high strength automotive axle tube steel,a low cost of 0.07%C+1.5%Mn+0.05%Nb+0.10%Ti was designed.The high strength mainly relies on grain refinement strengthening and precipitation strengthening.The recrystallization,precipitation,and CCT curves of the 700MPa grade axle tube steel were studied in order to determine a reasonable TMCP process.By controlling the low level segregation band,low level of C and N content,700MPa grade high strength automotive axle tube steel is successfully developed with excellent mechanical property,welding property,flattening and flaring property,torsion fatigue property,static torsional property and surface quality.
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