| 金属陶瓷复合材料的残余应力研究 |
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| 引用本文： | 何林,黄传真,孙静,刘含莲,艾兴.金属陶瓷复合材料的残余应力研究[J].山东大学学报(工学版),2003,33(3):245-248. |
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| 作者姓名： | 何林 黄传真 孙静 刘含莲 艾兴 |
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| 作者单位： | 1. 山东大学,机械工程学院,山东,济南,250061;贵州工业大学,机械工程与自动化学院,贵州,贵阳,550003
2. 山东大学,机械工程学院,山东,济南,250061 |
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| 基金项目： | 山东省中青年科学家科研奖励基金(9812),山东省自然科学基金(No.Y2001F05),济南市青年科技明星计划(20110) |
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| 摘 要： | 考虑整块材料的收缩对残余应力的影响,建立了计算金属陶瓷复合材料平均残余应力的力学模型,推导了平均残余应力公式,该式对材料的设计和制备有重要的意义.研究表明,平均残余应力与温度差呈线性关系;与硬质相的体积含量、组份材料的弹性模量、线膨]胀系数以及泊松比密切相关;随硬质相体积含量的增加而增大;金属粘结相"堆积"区域平均残余应力较大.
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| 关 键 词： | 金属陶瓷 残余应力 力学模型 |
| 文章编号： | 1672-3961(2003)03-0245-04 |
| 修稿时间： | 2002年9月25日 |
Study on the residual stress in cermet |
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| Abstract: | Mechanics model for calculating the average residual stress in cermet is established by considering the effect of material contraction on the residual stress, and the equation of average residual stress in cermet, which is important for design and preparation of cermet, is derived. The average residual stress is related to volume percentage of hard particle, the ration of the size of bonding phase zone aggregated in cermet and the size of hard particle, and the elastic modulus, thermal expansion coefficient and Poisson's ratio of constituents. The average residual stress is proportional to the temperature difference. The average residual stress increases with the volume percentage of hard particle in the cermet and the higher residual stress occurs in the region where the bonding metal is densely aggregated. |
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| Keywords: | cermet residual stress mechanics model |
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