回火温度对高Ti微合金直接淬火高强钢组织及性能的影响*

张可, 雍岐龙, 孙新军, 李昭东, 赵培林, 陈守东

EFFECT OF TEMPERING TEMPERATURE ON MICRO-STRUCTURE AND MECHANICAL PROPERTIES OF HIGH Ti MICROALLOYED DIRECTLY QUENCHED HIGH STRENGTH STEEL

ZHANG Ke, YONG Qilong, SUN Xinjun, LI Zhaodong, ZHAO Peilin, CHEN Shoudong

表1 实验钢在500和600 ℃回火后析出相的定量分析结果

Table 1 Quantitative analysis results of precipitates in tested steel tempering at 500 and 600 ℃

Temperature MC M3C MC ℃ Ti* Nb Mo C* S Fe Mn Cr Mo C* S 500 0.071 0.035 0.024 0.026 0.156 0.619 0.066 0.020 0.010 0.051 0.766 (Ti0.70Nb0.18Mo0.12)C 600 0.085 0.040 0.048 0.033 0.206 0.425 0.048 0.015 0.021 0.036 0.545 (Ti0.66Nb0.16Mo0.18)C