摘要
研究了致密度及不同热处理状态对SiCp/Al复合材料的抗弯强度和热膨胀系数的影响。结果表明,致密度对材料的抗弯强度的影响很大,当致密度为94%和98.5%时,强度分别为321及389MPa,相差约70MPa。热处理对复合材料的抗弯强度及热膨胀系数有较大的影响,T6态时的强度达到410MPa,但热膨胀系数减小;而原始态、时效态和退火态的抗弯强度依次降低,热膨胀系数依次升高(在400℃以下)。
The effect of densification and different heat treatment ways on bending strength and coefficient of thermal expansion（CTE） of SiCp/Al composite was studied. The results show that densification has a great effect on the bending strength. The strength is 321MPa and 389MPa when the densification is 94% and 98.5% ,respectively,the discrepancy is about 70 MPa. Heat treatment process has a great impact on the bending strength and CTE. The strength of the materials as-T6 reaches 410 MPa but the CTE decreases.The bending strength of three conditions such as ： as-casting, as-aging and as-annealing decreases,but the CTE increases （below 400℃） gradually.
出处
《热加工工艺》
CSCD
北大核心
2006年第20期43-45,63,共4页
Hot Working Technology
基金
国家自然科学基金资助项目(69976022)
关键词
SICP/AL
致密度
热处理
抗弯强度
热膨胀系数
SiCp/Al
densification
heat treatment
bending strength
coefficient of thermal expansion
