| 循环相变超细化20CrMnTi钢晶粒 |
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| 引用本文： | 许锋,薛克敏,李萍,王岗超,石文超.循环相变超细化20CrMnTi钢晶粒[J].金属功能材料,2011,18(3):63-66. |
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| 作者姓名： | 许锋 薛克敏 李萍 王岗超 石文超 |
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| 作者单位： | 合肥工业大学,材料科学与工程学院,安徽合肥230009 |
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| 基金项目： | 安徽省2008科技攻关计划面上项目 |
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| 摘 要： | 细化晶粒是一种提高材料强度和塑性的有效方法.将20CrMnTi钢在Ac1和Ac3温度范围内进行了3道次变温快速循环加热-冷却处理,晶粒尺寸由初始的36.9 μm细化到约5 μm,其布氏硬度值由初始的145.7提高到298.3.结果表明:经过3道次的循环相变处理后,由于形核率的提高,晶粒长大速度的降低和组织遗传性被破坏,...
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| 关 键 词： | 20CrMnTi 循环相变 热处理 晶粒超细化 |
Grain Ultra-refinement of Cycling Phase Transformation in 20CrMnTi Steel |
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| XU Feng,XUE Ke-min,LI Ping,WANG Gang-chao,SHI Wen-chao.Grain Ultra-refinement of Cycling Phase Transformation in 20CrMnTi Steel[J].Metallic Functional Materials,2011,18(3):63-66. |
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| Authors: | XU Feng XUE Ke-min LI Ping WANG Gang-chao SHI Wen-chao |
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| Affiliation: | (School of Material Science and Engineering,Hefei University of Technology,Hefei 230009,Anhui,China) |
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| Abstract: | Grain refinement is an effective way to improve material strength and plasticity.Aimed to 20CrMnT steel,three passes fast cycle variable temperature heating-cooling treatments were carried out between AC1 and AC3,then the grain size was refined from the initial 36.9 μm to 5 μm,and the Brinell hardness value was increased from 145.7 to 298.3.The results revealed that the grain was remarkably refined by three passes cycling phase transformation,because of the increased nucleation rate,the reduced rate of grain growth and the destroyed organization of genetic. |
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| Keywords: | 20CrMnTi cycling phase transformation heat treatment grain ultra-refinement |
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