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研究了不同的热处理工艺对低碳硅-铌双相钢的显微组织、力学性能及冷拔性能的影响。结果表明,试验钢采用临界区淬火和双重淬火两种制度,可在830℃到960℃较宽的温度范围内获得铁素体+马氏体的双相组织,纤维状双相组织或铁素体边界马氏体双相组织同样具有理想的强韧性配合。经300℃充分回火,可消除时效对性能的影响。其钢丝的拉拔率达90%以上,具有良好的成形性及耐磨性能。
The effects of different heat treatment processes on the microstructure, mechanical properties and cold drawing properties of low carbon silicon-niobium dual phase steel were studied. The results show that the critical temperature quenching and dual quenching test systems can be used to obtain the dual-phase structure of ferrite + martensite in the wide temperature range from 830 ℃ to 960 ℃, fibrous duplex structure or ferrite Body boundary martensite duplex also has the ideal strength and toughness. After 300 ℃ fully tempered, can eliminate the impact of aging on performance. The wire drawing rate of 90% or more, has good formability and wear resistance.