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2 在600 ℃析出强化增量计算值

Table 2 Calculated results of precipitation hardening increments tempering at 600 ℃

Particle size nm Mass fraction % Volume fraction % Strength increment / MPa Eq. (4) Eq. (5) 1~5 20.4 0.000543 150.79 162.12 5~10 9.3 0.000247 54.55 61.19 10~18 17.8 0.000473 49.10 55.74 18~36 3.2 0.000085 12.83 14.69 36~60 3.2 0.000085 8.21 9.45