铸造2024，Vol.73Issue(4)：509-513,5.
液相线铸造Al-18Si合金的凝固组织与力学性能研究
Study on Solidification Microstructure and Mechanical Properties of Liquidus Cast Al-18Si Alloy
摘要
Abstract
The solidification microstructure and mechanical properties of liquidus cast Al-18Si alloy were studied using optical microscopy,Image-Pro Plus software,X-ray diffractometer,and universal tensile testing machine.The results indicated that with the increase of holding time at liquidus temperature,the size of primary silicon in Al-18Si hypereutectic aluminum silicon alloy showed a trend of first decreasing and then increasing,while the mechanical properties showed a trend of first increasing and then decreasing.Compared with ordinary casting,the liquidus casting reduced the average size of the primary silicon in the Al-18Si alloy by 30.6%,and increased the tensile strength and elongation of the alloy by 27%and 108%,respectively.Therefore,the liquidus casting was an effective method to improve the solidification microstructure and mechanical properties of hypereutectic aluminum silicon alloys.关键词
过共晶铝硅合金/液相线铸造/凝固组织/力学性能Key words
hypereutectic Al-Si alloy/liquidus casting/solidification microstructure/mechanical properties分类
矿业与冶金引用本文复制引用
刘细良,王云飞,杜福林,王建华..液相线铸造Al-18Si合金的凝固组织与力学性能研究[J].铸造,2024,73(4):509-513,5.基金项目
国家自然科学基金项目(52071032). （52071032）
