铸造2017，Vol.66Issue(7)：711-714,4.
工艺参数对原位合成TiB2/Al-7Si复合材料微观组织的影响
Effect of Process Parameters on the Microstructure of In-Situ TiB2/Al-7Si Composite
任波 1赵瑞锋 2刘忠侠 3刘扭参 3张红松2
作者信息
- 1. 河南工程学院机械工程学院,河南郑州451191
- 2. 河南工程学院理学院,河南郑州 451191
- 3. 郑州大学材料物理教育部重点实验室,河南郑州450001
- 折叠
摘要
Abstract
In-situ TiB2/Al-7Si composites were fabricated by mixed salt reaction under the different process parameters. The microstructure of TiB2/Al-7Si composites was investigated by using XRD, SEM and optical microscope. The results show that the microstructure of the TiB2/Al-7Si composites was composed ofα-Al phase, eutectic Si phase and TiB2 phase. When the melt reaction temperature was too high or too low, serious aggregation occurred in TiB2 particles because of its sedimentation or not easy diffusion. In addition, the melt reaction time was too long or too short, aggregation also took place in TiB2 particles due to particle sedimenta-tion or an inadequate reaction. TiB2/Al-7Si composites with a fine grain and uniform distribution of TiB2 particles were acquired when the melt reaction temperature was 875℃and the melt reaction time was 20 min.关键词
TiB2/Al-7Si复合材料/工艺参数/团聚/微观组织Key words
TiB2/Al-7Si composites/process parameter/aggregation/microstructure分类
通用工业技术引用本文复制引用
任波,赵瑞锋,刘忠侠,刘扭参,张红松..工艺参数对原位合成TiB2/Al-7Si复合材料微观组织的影响[J].铸造,2017,66(7):711-714,4.
