| 两相区热处理对ZG14Ni3CrMoV铸钢低温韧性的影响 |
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| 引用本文： | 王祖华,杨超飞,牛继承,王任甫. 两相区热处理对ZG14Ni3CrMoV铸钢低温韧性的影响[J]. 材料开发与应用, 2017, 32(5) |
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| 作者姓名： | 王祖华 杨超飞 牛继承 王任甫 |
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| 作者单位： | 1. 武汉第二船舶设计研究所,湖北武汉,430064;2. 中国船舶重工集团公司第七二五研究所,河南洛阳,471023 |
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| 摘 要： | 对比了淬火+回火(QT),淬火+两相区淬火+回火(QLT)两种热处理工艺对ZG14Ni3CrMoV铸钢组织和性能的影响.结果表明,QLT工艺在保证铸钢板厚四分之一强度满足指标要求、塑性良好的情况下,大幅度提高了ZG14Ni3CrMoV铸钢的低温韧性,-80℃冲击吸收功提高到171 J,NDT温度降低至-95℃;晶粒细化和双相组织是两相区二次淬火提高低温韧性的主要原因.
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| 关 键 词： | 铸钢 两相区 低温韧性 晶粒度 |
Effect of Two-phase Region Heat Treatment on Cryogenic Toughness of ZG14Ni3CrMoV Cast Steel |
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| WANG Zuhua,YANG Chaofei,NIU Jicheng,WANG Renfu. Effect of Two-phase Region Heat Treatment on Cryogenic Toughness of ZG14Ni3CrMoV Cast Steel[J]. Development and Application of Materials, 2017, 32(5) |
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| Authors: | WANG Zuhua YANG Chaofei NIU Jicheng WANG Renfu |
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| Abstract: | Effects of QT and QLT heat treatments on microstructure and properties of ZG14Ni3CrMoV cast steel were investigated.The results show that the low temperature toughness of the sample from 1/4 thickness of ZG14Ni3CrMoV cast steel is greatly improved by QLT process while the can meet strength the requirements and plasticity is good.Impact absorbing energy has improved to 171 J at-80 ℃ and ductility transition temperature has reduced to-95 ℃.Grain fineness and dual phase structure are the main reasons for the improvingof the low temperature toughness by QLT treatment. |
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| Keywords: | cast steel two-phase region low temperature toughness grain size |
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