论文部分内容阅读
本文系统地研究了轧制及退火工艺对高速钢淬火晶粒度及性能的影响。发现:(1)轧前退火对高速钢淬火晶粒度及性能无明显影响;(2)轧后回火式退火或不退火的钢材,当轧制温度低于1050℃,变形量大于50％,淬火温度较低时,淬火晶粒细小,机械性能较好。当轧制温度高于1150℃,变形量小于30％、淬火温度较高时,将产生淬火晶粒不连续长大,机械性能不好;(3)轧后相变退火的钢材,淬火晶粒随温度升高均匀长大;(4)淬火晶粒度与M_6C碳化物的数量、大小、间距及位错、亚晶有关。
This paper systematically studied the rolling and annealing process on high-speed steel quenching grain size and performance. The results show that: (1) The pre-rolling annealing has no obvious effect on the grain size and properties of high-speed steel during quenching; (2) When the rolling temperature is below 1050 ℃ and the deformation is more than 50% , Quenching temperature is low, the fine grain of quenching, good mechanical properties. When the rolling temperature is higher than 1150 ℃, the deformation is less than 30%, quenching temperature is high, there will be discontinuous growth of the quenched grains, poor mechanical properties; (3) after the rolling transformation annealed steel, quenched grains (4) Quenching grain size and the amount of M_6C carbide, size, spacing and dislocation, sub-crystal related.