Distribution of TiB2 Particles and Its Influence on the Primary Si in TiB2/A390 Composite

摘要：

The hypereutectic Al - Si matrix composite reinforced with TiB2 particles was successfully fabricated using a melt reaction method. The size of TiB2 particles in the composite is about 0. 5 -1. 0 μm. Some TiB2 particles are engulfed by the primary Si while the others are mAlnly pushed to the phase boundaries during solidification. It is believed that high concentrations of TiB2 particles decreased the size of primary Si and made it less angular. Furthermore, compared with the matrix alloy, the ultimate tensile strength of the composite is increased by 8. 8％ at 300℃.

关键词： TiB2 hypereutectic Al - Si composite primary Si UTS

作者: Li Pengting Li Yunguo Li Chong Lin Xiangfa

作者单位: Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Educat Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials,Ministry of Educati

会议类型: 国际会议

会议名称: 69th World Foundry Congress(第69届世界铸造会议 WFC 2010)

会议地点: 杭州

会议语种:英文

页码: 453-455

在线出版日期: 2010-10-16（万方平台首次上网日期，不代表论文的发表时间）