项一侯,唐立威,王景辉,吴国龙,张群莉,姚建华.微弧氧化对选区激光熔化多孔Ti6Al4V力学性能的影响[J].表面技术,2024,53(13):84-95.
XIANG Yihou,TANG Liwei,WANG Jinghui,WU Guolong,ZHANG Qunli,YAO Jianhua.Effect of Micro-arc Oxidation on the Mechanical Properties of Hierarchical Porous Ti6Al4V Prepared by Selective Laser Melting[J].Surface Technology,2024,53(13):84-95 |
| 微弧氧化对选区激光熔化多孔Ti6Al4V力学性能的影响 |
| Effect of Micro-arc Oxidation on the Mechanical Properties of Hierarchical Porous Ti6Al4V Prepared by Selective Laser Melting |
| 投稿时间：2024-03-11 修订日期：2024-04-26 |
| DOI：10.16490/j.cnki.issn.1001-3660.2024.13.009 |
| 中文关键词: 微弧氧化 选区激光熔化 多级多孔Ti6Al4V 点阵材料 相对密度 力学性能 |
| 英文关键词:micro-arc oxidation selective laser melting hierarchical porous Ti6Al4V lattice materials relative density mechanical property |
| 基金项目:国家基金区创重点(U22A20199);装备预研教育部联合基金项目(8091B022215);国家基金联合一般项目(U2130122) |
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| Author | Institution |
| XIANG Yihou | Institute of Laser Advanced Manufacturing,College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, China;Key Laboratory of Special Purpose Equipment and Advanced Manufacturing Technology, Ministry of Education and Zhejiang Province, Hangzhou 310023, China |
| TANG Liwei | Institute of Laser Advanced Manufacturing,College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, China;Key Laboratory of Special Purpose Equipment and Advanced Manufacturing Technology, Ministry of Education and Zhejiang Province, Hangzhou 310023, China |
| WANG Jinghui | Institute of Laser Advanced Manufacturing,College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, China;Key Laboratory of Special Purpose Equipment and Advanced Manufacturing Technology, Ministry of Education and Zhejiang Province, Hangzhou 310023, China |
| WU Guolong | Institute of Laser Advanced Manufacturing,College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, China;Key Laboratory of Special Purpose Equipment and Advanced Manufacturing Technology, Ministry of Education and Zhejiang Province, Hangzhou 310023, China |
| ZHANG Qunli | Institute of Laser Advanced Manufacturing,College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, China;Key Laboratory of Special Purpose Equipment and Advanced Manufacturing Technology, Ministry of Education and Zhejiang Province, Hangzhou 310023, China |
| YAO Jianhua | Institute of Laser Advanced Manufacturing,College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, China;Key Laboratory of Special Purpose Equipment and Advanced Manufacturing Technology, Ministry of Education and Zhejiang Province, Hangzhou 310023, China |
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| 中文摘要: |
| 目的 探究多孔Ti6Al4V经过微弧氧化(MAO)表面改性后力学性能的变化规律。方法 采用选区激光熔化(Selective Laser Melting，SLM)制备了相对密度分别为0.30、0.38、0.47的多孔Ti6Al4V点阵材料，利用表面化学抛光预处理和MAO工艺在其表面制备MAO膜层，再通过显微观察和单轴压缩试验分析其微观形貌和力学性能。结果 经过表面化学抛光预处理和MAO之后的多级多孔Ti6Al4V表面MAO膜层的孔径大小与脉冲电压及氧化时间呈正相关，膜层厚度和膜层中的钙磷原子比与氧化时间均呈现正相关关系，且在350 V脉冲电压和10 min氧化时间条件下制备的膜层最为均匀。MAO前后多孔Ti6Al4V的压缩应力-应变曲线基本一致，两者的弹性模量和屈服强度均随相对密度的增加而提高。与G-A方程计算的理论值相比，实测的弹性模量略有下降，但不显著，这可能是因为多孔Ti6Al4V在SLM成形过程中由于快速加热和冷却导致残余应力的产生，从而导致其弹性模量减小。同时由于SLM成形的多孔Ti6Al4V点阵材料中的孔隙壁可能低于理论预测中所假设的值，这会使得孔隙壁在加载过程中发生变形或破坏，这也会导致材料整体弹性模量的降低。而实测的屈服强度高于G-A方程计算的理论值，这可能是由于SLM成形多孔Ti6Al4V点阵材料的孔隙结构相较于G-A方程的理论模型更加规则。此外，在对数坐标中，MAO前后的屈服强度与弹性模量呈强正比关系，斜率分别为1.10和1.18，十分趋近于G-A方程的理论值。这亦表明MAO对多孔Ti6Al4V的整体力学性能影响有限。结论 脉冲电压为350 V、氧化时间为10 min条件下MAO工艺所制备的膜层最为均匀，同时MAO对SLM成形多孔Ti6Al4V点阵材料的总体力学性能影响有限。 |
| 英文摘要: |
| The work aims to investigate the change rule of mechanical properties of porous Ti6Al4V after surface modification through micro-arc oxidation (MAO). In this research, porous Ti6Al4V lattice materials with relative densities of 0.30, 0.38, and 0.47 were prepared by selective laser melting (SLM). The surface was pre-treated by chemical polishing and then the MAO film layer was formed on the surface by the MAO process, and then the microscopic morphology and mechanical properties were analyzed by microscopic observation and uniaxial compression test. |
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