摘要
提出一种新型的熔体搅拌铸造工艺 ,解决了Al Si合金对 10 μm级以下高体积分数TiN ,AlN陶瓷的非真空无压浸润问题 ,并在此基础上成功制备了高强度低成本的TiN AlNp/Al Si复合材料。研究表明 ,细小TiN ,AlN颗粒在铝熔体中已经实现了润湿 ,平均尺寸在 2～ 3μm ,基本呈均匀分布 ,与基体结合良好。当TiN ,AlN的含量为10 % (体积分数 )时 ,复合材料的抗拉强度为 335MPa ,屈服强度为 2 40MPa ,延伸率为 2 .4%。
A new technology of melt stirring and casting was presented to improve the wettability of TiN and AlN particles less than 10?μm with high volume fraction in Al Si alloy melt at non vacuum and free pressure condition. Based on this technology the TiN AlN p/Al Si composites with high strength and low cost were fabricated successfully. The results indicate that fine TiN and AlN ceramic particles with the size of 2～ 3?μm have realized wetting with Al Si melt. The particles basically assume an even distribution and a well bonding with the aluminum matrix. The main properties of the composite with 10% (volume fraction) TiN and AlN are as follows: ultimate tensile strength is 335?MPa, yield strength 240?MPa and elongation coefficient 2.4%.
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2002年第z1期111-114,共4页
The Chinese Journal of Nonferrous Metals
基金
中韩国际合作研究项目 (CJ99-0 7)
河北省自然科学基金资助项目 ( 5 980 30 )
关键词
铝基复合材料
TIN
ALN
润湿性
aluminum matrix composite
titanium nitride
aluminum nitride
wettability
