固溶冷却方式对10Ni3MnCuAl模具钢组织和性能的影响
Effect of Solution Cooling Method on Microstructure and Properties of 10Ni3MnCuAl Mould Steel
摘 要
研究了固溶冷却方式对时效硬化型塑料模具钢10Ni3MnCuAl显微组织和力学性能的影响。结果表明：采用880℃固溶12 h油冷后时效40 h的工艺，10Ni3MnCuAl钢可以获得较好的综合力学性能，冲击功可达到25.6 J；该热处理条件下的组织主要是板条马氏体、板条贝氏体和少量残余奥氏体；采用冷速较慢的炉冷固溶工艺，会促进晶界处碳化物析出，促进M/A岛的产生，进而显著恶化钢的冲击韧性。
M/A岛
塑料模具钢
solution and aging process
M/A islands
plastic mould steel
Abstract
Effect of solution cooling method on microstructure and properties of 10Ni3MnCuAl plastic mould steel were studied. Results show that 10Ni3MnCuAl steel can obtain the better comprehensive mechanical properties, after heat treatment by solid solution treatment at 880℃ for 12 h, oil cooling, and aging treatment at 530℃ for 40 h. The impact energy is 25.6 J. The microstructure of different heat treatment process was analyzed, the oil cooled microstructure is mainly contain lath martensite, lath bainite and a small amount of residual austenite. The slower cooling rate of furnace cooling will promote the phase boundary carbides precipitate, promote the decomposition of the M/A islands, and then significant deteriorated the impact toughness.
中图分类号 TG142.45
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引用该论文: HU Yidi,CHI Hongxiao,ZHOU Xiaolong,ZHOU Jian,MA Dangshen. Effect of Solution Cooling Method on Microstructure and Properties of 10Ni3MnCuAl Mould Steel[J]. Materials for mechancial engineering, 2017, 41(Z2): 30～33
胡一迪,迟宏宵,周晓龙,周建,马党参. 固溶冷却方式对10Ni3MnCuAl模具钢组织和性能的影响[J]. 机械工程材料, 2017, 41(Z2): 30～33
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【5】田德允,张瑞成,翁志刚,等. 微合金高强钢焊接热影响区中粒状贝氏体微观结构的实验研究[J]. 金属学报, 2000(2):181-186.
【6】段琳娜,赵晓丽,刘清友,等. Mo含量及冷却工艺对低碳贝氏体钢组织与M/A岛的影响[J]. 材料热处理学报,2014(10):142-147.
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