【摘要】 研究了热循环对铝基复合材料热膨胀和冷却收缩曲线的影响。发现电子封装纤维增强铝基复合材料的热循环曲线是不封闭的。热循环曲线的形状、不封闭程度同增强体的种类、测试方向、热循环温度区间以及热循环次数等因素有关。利用细观力学理论较好地解释了这些现象。更多还原

【Abstract】 The effects of thermal circling on the curve of heat expansion and cold contraction are investigated. Itis found that the thermal circling curves of aluminum-matrix composites reinforced with carbon fiber forelectronic packaging are not close. The curve shape and close extent of thermal circling are related to rein-forcernents ,sarnple orientation ,thermal circling number of times and temperature range. These phenomenaare explained by micro-mechanics.更多还原