摘要
研究了SiCp/A356铝基复合材料在不同铸造压力、碳化硅含量、金属型温和铸件尺寸厚度(代表凝固冷却速率)等工艺参数下的铸造流动性。结果显示,随着SiC颗粒添加量的增加,铝基复合材料的流动性呈显著降低的趋势。随着铸造压力的提升,复合材料的流动性显著增加。但当压力超过10MPa后,流动性仅是微幅增加。其次,提高模具温度也可以增加铝基复合材料的流动性,尤其对壁厚2mm左右的件更为明显。
The aim of this study was to investigate the influence of pressure process parameters, e.g., SiC_p content, metal mold temperature, squeeze pressure and casting thickness (representing cooling rate)on the fluidity of SiC_p/A356 Al-matrix composites. The experimental results indicate that the fluidity of SiC_p/A356 composite tend to increase with the increase of squeeze pressure. However, the pressure affects on fluidity for SiC_p/A356.Above threshold limit value, the fluidity is not clearly increased. When the SiC_p content added is more than 5wt% in the SiC_p/A356 composite, the fluidity will decrease. In addition, the fluidity of the composite is also increased with the increase of casting thickness.
出处
《铸造》
CAS
CSCD
北大核心
2004年第11期898-900,共3页
Foundry
关键词
挤压铸造
铝基复合材料
流动性
squeeze casting
aluminum matrix composite
fluidity
