黑龙江科技大学学报2016，Vol.26Issue(6)：649-652,4.DOI:10.3969/j.issn.2095-7262.2016.06.013
Ce含量对铝硅合金组织与力学性能的影响
Effect of Ce content on microstructure and mechanical properties of Al-Si alloy
摘要
Abstract
This paper is motivated by the need for investigating the effect of Ce on the miscrostructure and the mechanical property of Al-Si alloy by observing the microstructure of alloy using optical microscope and scanning electron microscope;and by testing the micro hardness under normal temperature and impact performance.The results demonstrate that the addition of Ce into finer Al-5Ti gives the miscrostructure of α-Al a transition from dendritic to block,ball,allowing eutectic Si to change from needle into granular and short rod,with a resultant smaller grain size and significantly improved impact performance;and the presence of Ce mass fraction of 0.6％ is associated with significantly improved properties of Al-Si alloy,resulting in a more homogeneous structure;a higher metal hardness(479.51 MPa);the largest alloy impact toughness,up to 28.95 J/cm2,53.5％ higher than before the addition;and an occurrence of a smaller amount of toughening in alloy fracture,an indication of a mixed fracture.关键词
铝硅合金/Ce/微观组织/力学性能/断口分析Key words
Al-Si alloys/Ce/microcosmic structure/mechanical properties/fracture analysis分类
矿业与冶金引用本文复制引用
赵继涛,尹冬松,王振清..Ce含量对铝硅合金组织与力学性能的影响[J].黑龙江科技大学学报,2016,26(6):649-652,4.基金项目
黑龙江省应用技术研究与开发计划项目(GC13A104) （GC13A104）
