| 不同冷速对TC4钛合金组织和性能的影响 |
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| 引用本文： | 欧梅桂,夏麒帆,宋洪超,梁益龙. 不同冷速对TC4钛合金组织和性能的影响[J]. 稀有金属材料与工程, 2019, 48(2): 638-643 |
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| 作者姓名： | 欧梅桂 夏麒帆 宋洪超 梁益龙 |
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| 作者单位： | 贵州大学，材料与冶金学院,贵州大学，材料与冶金学院,贵州大学，材料与冶金学院,贵州大学，材料与冶金学院 |
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| 基金项目： | 贵州省科技厅重大专项(黔科合重大专项字(2014)6013)；贵州省科技厅工业攻关项目(黔科合GZ字(2014)3018号) |
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| 摘 要： | 对TC4钛合金进行了不同冷速的热处理，得到了不同层次（晶粒、丛域、片层）的显微组织，建立了以片层组织尺寸为基础的Hall-Petch关系。结果表明：随着冷却速率的增加，片层细化，对应的屈服强度和抗拉强度逐渐升高，塑性逐渐降低。片层尺寸和力学性能之间较好地吻合Hall-Petch关系，是影响力学性能的主要特征参量。
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| 关 键 词： | TC4钛合金 不同冷速 组织尺寸 力学性能 Hall-Petch关系 |
| 收稿时间： | 2017-06-28 |
| 修稿时间： | 2017-08-23 |
The effect of cooling rate on microstructure and mechanical properties of TC4 titanium alloy |
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| Ou Meigui,Xia Qifan,Song Hongchao and Liang Yilong. The effect of cooling rate on microstructure and mechanical properties of TC4 titanium alloy[J]. Rare Metal Materials and Engineering, 2019, 48(2): 638-643 |
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| Authors: | Ou Meigui Xia Qifan Song Hongchao Liang Yilong |
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| Affiliation: | College of materials and metallurgy,University of Guizhou,Guizhou Guiyang,,,College of materials and metallurgy,University of Guizhou |
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| Abstract: | The different level microstructure (grains,colonies and lamellas)were obtained when TC4 titanium alloy was heat-treated at different cooling rates, and the Hall-Petch relation was established based on different level microstructure. With the increase of cooling rate, the lamellas were refined; the yield strength and tensile strength increased, whereas the ductility gradually decreased.The relationship between lamella size and mechanical properties was in line with Hall-Petch relation, therefore the lamella was the main characteristic parameter affecting the mechanical propertiesand. |
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| Keywords: | TC4 titaniumalloy different cooling rates microstructure size mechanical properties Hall-Petch relation |
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