| 磁控溅射微纳米梯度镀层对45钢及40Cr钢弹性变形性能的影响 |
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| 引用本文： | 白力静,蒋百灵,乔亮,李艳,殷鹏. 磁控溅射微纳米梯度镀层对45钢及40Cr钢弹性变形性能的影响[J]. 机械工程学报, 2011, 47(4). DOI: 10.3901/JME.2011.04.032 |
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| 作者姓名： | 白力静 蒋百灵 乔亮 李艳 殷鹏 |
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| 作者单位： | 西安理工大学材料科学与工程学院,西安,710048 |
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| 基金项目： | 国家重点基础研究发展计划(973计划,2009CB724406); 西安理工大学基金(210802)资助项目 |
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| 摘 要： | 利用磁控溅射离子镀技术在屈强比不同的45钢及40Cr钢基体上制备Cr、类石墨碳(Graphite-like-carbon,GLC)及CrTiAlN微纳米梯度镀层,通过考察镀层/金属复合体系弹性模量和屈服强度的变化来研究镀层对基体弹性变形行为的影响。研究结果表明:磁控溅射离子镀层可以改善金属基体的弹性变形性能,但镀层对不同金属基体力学参量的影响不同;屈强比低的45钢,镀层可同时提高弹性模量和屈服强度,在v=0.1mm/min的低速拉伸时,45钢试样的屈服强度可提高20%左右;屈强比高的40Cr钢,镀层对其屈服强度基本无影响,但对弹性模量提高的程度更显著,当拉伸速度为0.7mm/min时,40Cr钢试样的弹性模量可提高60%,而45钢仅为22%;镀层/基体复合体系的弹性模量随拉伸速度的增加表现为先增大后减小的特点,其变化规律不同于金属基体;镀层的高硬度和良好的膜基匹配能力有助于阻碍工件表面及亚表面微塑性形变区的扩展,从而提高试样的力学性能。
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| 关 键 词： | 磁控溅射离子镀 梯度镀层 弹性变形 弹性模量 |
Influence of Nano-gradient Coatings on the Elastic Deformation Properties of 45 Steel and 40Cr Steel Deposited by Magnetron Sputtering |
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| BAI Lijing,JIANG Bailing,QIAO Liang,LI Yan,YIN Peng. Influence of Nano-gradient Coatings on the Elastic Deformation Properties of 45 Steel and 40Cr Steel Deposited by Magnetron Sputtering[J]. Chinese Journal of Mechanical Engineering, 2011, 47(4). DOI: 10.3901/JME.2011.04.032 |
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| Authors: | BAI Lijing JIANG Bailing QIAO Liang LI Yan YIN Peng |
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| Affiliation: | BAI Lijing JIANG Bailing QIAO Liang LI Yan YIN Peng(School of Material Science and Engineering,Xi'an University of Technology,Xi'an 710048) |
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| Abstract: | Cr,GLC(graphite-like-carbon) and CrTiAlN nanoscaled coatings are deposited by using magnetron sputtering on 45 steel and 40Cr steel of different yield-strength ratios.The influence of the coatings on the ability of elastic deformation of metal matrix is investigated by measuring the changes of elastic modulus and yield stress.The results show that all coatings can improve elastic deformation properties of metal substrate,but the effect on different steel is different.For 45 steel which has lower yield-stren... |
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| Keywords: | Magnetron-sputtering ion plating Gradient coating Elastic deformation Elastic modulus |
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