【摘要】 本文用正电子湮没技术研究了PV-E轧制产品B₂F钢,测得了正电子寿命与轧制压力及机械性能间的对应关系,为PV-E轧制工艺提供了依据。实验表明,轧制过程中B₂F钢中存在大量位错和空位团缺陷,且正电子寿命与速比有一定对应关系,揭示了速比对机械性能的影响。更多还原

【Abstract】 B2F steel rolled by newly developed technology is investigated with the positron annihilation technique. The relationship between the average lifetime of positron and the rolling pressure, the ratio of rolling speeds and the mechanical properties are measured. It is shown by electron microscope observation that, judging by the positron lifetime, there are a lot of dislocations and vacancy cluster defects in B2F steel during rolling.更多还原