增强体种类及含量对金属基复合材料力学性能的影响

权高峰; 柴东朗; 宋余九; 涂铭旌

增强体种类及含量对金属基复合材料力学性能的影响

1.
西安交通大学金属材料强度国家重点实验室, 西安 710049;
2.
四川联合大学金属材料系, 成都 610065

基金项目: 本研究得到国家自然科学基金资助(8588009) 和机械结构强度与振动国家重点实验室、金属材料强度国家重点实验室基金资助。

详细信息

中图分类号: TB333; TB302. 3
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- 文章访问数: 1741
- HTML全文浏览量: 84
- PDF下载量: 1219
出版历程
- 收稿日期: 1997-09-13
- 修回日期: 1998-01-20
- 刊出日期: 1999-06-24

EFFECTS OF CATEGORY AND CONTENT OF REINFORCEMENTS ONMECHANICAL PROPERTIES OF METAL MATRIX COMPOSITES

1.
State Key Laboratory for Mechanical Behavior of Materials, Xian Jiaotong University, Xian 710049;
2.
Metal Materials Department, Sichuan United University, Chengdu 610065

摘要

摘要: 用粉末冶金法制备了氧化铝、碳化硅颗粒增强的几种铝合金复合材料, 对不同增强体含量的复合材料进行了力学性能测试。研究结果表明, 复合材料拉伸弹性模量随增强体含量增加而升高, 断裂延伸率下降。SiC_P/2024 具有最高的强度和增强效率, 随增强体含量增加至25% , 强度逐渐升高; SiC_P/7075 的强度水平低于基体合金; SiC_P/Al (工业纯) 强度提高幅度较大; Al₂O_3P/2024的强度随增强体含量增加呈先上升、后下降趋势。分析认为不同复合材料间的这种性能差异由增强体与基体强度水平和变形行为特征所决定。高强度、高模量的增强体与高强度、高形变硬化率的基体的配合是获得高强度复合材料的重要条件。
- 增强体种类, 颗粒, 金属基复合材料, 力学性能
Abstract: Some aluminum matrix composites, reinforced by alumina and silicon carbide particles, were fabricated by P/M method, and the normal mechanical properties were measured. It is shown that the elastic modulus increases with volume fraction of ceramic particles, though the fracture strain decreases. SiC_P/2024 system has the highest strength and best reinforcing efficiency, with the increase of particle volume fraction to 25%. SiC_P/7075 system has lower strength than that of the controlled alloy. SiC_P/pureAl system shows higher reinforcing efficiency in spite of the lower absolute strength. Al₂O_3P/2024 system exhibits a character of first rise and then drop in strength. It is considered that these differences may depend on the strength levels of reinforcements and the matrices and the deforming characteristics. The better matrices should have higher strength as well as higher workhardening rate.
- reinforcement category

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文章访问数: 1741
HTML全文浏览量: 84
PDF下载量: 1219
被引次数: 0

增强体种类及含量对金属基复合材料力学性能的影响

计量

出版历程

EFFECTS OF CATEGORY AND CONTENT OF REINFORCEMENTS ONMECHANICAL PROPERTIES OF METAL MATRIX COMPOSITES

计量

出版历程

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