摘要
测定了真空气压渗流法制备的三种高体积分数ＳｉＣＰ／Ａｌ复合材料在０～４００℃间的热循环曲线及其在此温度区间的线膨胀系数值。测试结果表明复合材料的线膨胀系数值约为其基体的一半，其值与Ｋｅｒｎｅｒ模型的计算值相接近；复合材料的热循环曲线的特征明显不同于其基体，三种基体复合材料的热循环曲线的特征也存在差异。对此应用塑性变形理论进行了解释。
In this paper, the linear expansion coefficient and thermal cycling curve of three kinds of high volume fraction SiCP /Al matrix composites fabricated by vacuumassisted gas pressure infiltration casting were tested at 0～400℃ temperature interval. The results show that the linear expansion coefficient of composites is about half the value of its matrix. The composites' thermal cycling curve is obviously different from that of its matrix. Thermal cycling curves of three composites are also different from each other. It is explained by the theory of plastic strain in matrix. It was found that closing characteristic of thermal cycling curve for composite can be optimized by changing its matrix.
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
1998年第2期6-11,共6页
Acta Materiae Compositae Sinica
关键词
高体积分数
铝基复合材料
热膨胀性能
thermal cycling curve, linear expansion coefficient, plastic strain, SiCP/Al composite, highvolume fraction
