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本文论述了T10钢经球化退火、780℃淬火和200℃回火传统热处理工艺处理后的机械性能和组织,并用对比方法着重研究了改变原始组织和淬火加热温度的影响。研究表明,原始组织为片状珠光体+网状渗碳体的T10钢试样,采用840℃淬火和200℃回火的热处理工艺,综合机械性能最佳,具有特别高的抗压强度、抗压屈服强度及多次冲击弯曲寿命,大大超过传统工艺处理结果;新工艺的淬透性较传统工艺高30%。铆钉风窝头的生产试验表明,采用新工艺获得的高强韧性能,是由于T10钢组织中出现亚结构为具有高密度缠结位错的筐篮编结状马氏体的缘故。
In this paper, the mechanical properties and microstructure of T10 steel after ball annealing, 780 ℃ quenching and tempering at 200 ℃ are discussed. The effect of changing the original microstructure and quenching temperature is studied emphatically. The results show that the T10 steel specimen with lamellar pearlite and reticular cementite as the primary structure has the best combination of mechanical properties, high compressive strength and high resistance to heat treatment at 840 ℃ and tempering at 200 ℃ Compressive yield strength and multiple impact bending life, much more than the traditional process results; new technology hardenability 30% higher than the traditional process. Production trials of rivets and windrows have shown that the high strength and toughness obtained with the new process is due to the presence of basketry braided martensite with high-density entangled dislocations in the T10 steel.