摘要
研究了1000～1240℃淬火,以及1100℃淬火+200～580℃回火对25 kg真空感应炉冶炼的Cr8WMo2V2SiNb钢(%:0.96C、1.11Si、7.79Cr、1.79Mo、2.16V、0.96W、0.60Nb)Φ13 mm锻材的淬火组织和晶粒度,淬-回火组织、硬度和冲击功的影响。结果表明,Cr8WMo2V2SiNb钢1 100℃淬火后的硬度HRC值为64.5;1100℃淬火+520℃回火有明显二次硬化效应,硬度达到最大值-HRC62.5,并有较好的韧性,冲击功为8.7 J。
Effect of quenching treatment at 1 000 - 1 240℃ and quenching at 1 100 ℃ ＋ tempering at 200 - 580 ℃ treatment on quenched structure and grain size, quenched-tempered structure, hardness and impact energy of Φ13 mm forged product of steel Cr8WMo2V2SiNb （ % ： 0. 96C, 1. llSi, 7.79Cr, 1.79Mo, 2. 16V, 0. 96W, 0. 60Nb） melted by a 25 kg vacuum induction furnace, has been studied. Results show that with 1 100 ℃ quenching, the hardness HRC value of steel Cr8WMo2V2SiNb is 64. 5, with 1 100 ℃ quenching ＋ 520 ℃ tempering the steel has obvious secondary hardening effect, and the hardness of steel is coming to maximum i.e. HRC62. 5 with better toughness i.e. impact energy 8.7 J.
出处
《特殊钢》
北大核心
2010年第1期49-51,共3页
Special Steel
基金
国家"十一五"科技支撑计划(2007BAE510B04)
