摘要
研究了２７ＳｉＭｎ钢的亚温淬火工艺，着重讨论了亚温区的淬火温度选择及预处理组织对该钢亚温淬火效果的影响．测试了各种状态的静强度和冲击韧性．通过高压透射电子显微镜对试验钢微观组织的观察分析，得出该钢的亚温淬火加热温度在８６０℃，原始状态以调质态时性能较好．从经济的观点出发，采用锻造后正火态＋８６０℃淬火＋５５０℃高温回火的亚温处理可代替９２０℃淬火＋５００℃回火的原调质工艺．
In this paper, the effectS of intercritical temperature and pretreatment on the microstructure and properties of 27SiMn steel are invedigsted by the tension and the impacttest and the TEM microstructural analysis. The results show that 860℃ is the suitableauSteniting temperature and improvement is the better pretrearment of 27SiMn steel.From the economical point of view the traditional technique (quenched from 920℃, temPered at 500℃ ) can be replaced by a new treatment (normalizing+ 860℃ intercritioalquenching+550℃ tempering).
出处
《西安工业学院学报》
1995年第3期220-224,共5页
Journal of Xi'an Institute of Technology
关键词
亚温淬火
显微组织
韧性
合金钢
淬火
热处理
iron-base alloys intercritical quenching microstructure toughness
