铸造技术2024，Vol.45Issue(4)：356-362,7.DOI:10.16410/j.issn1000-8365.2024.3314
原位纳米(TiB2+ZrB2)颗粒与Sb协同增强A356铝合金微观组织与力学性能
Microstructure and Mechanical Properties of A356 Alloy Reinforced by In Situ(TiB2+ZrB2)Nanoparticles and Sb
摘要
Abstract
In this paper,in situ nanoparticles(TiB2+ZrB2)and Sb are introduced simultaneously into A356 aluminium alloy to improve the mechanical properties of the material through the synergistic effect arising from the reinforcement of the matrix by the nanoparticles and the enhancement of particle dispersion by Sb.The introduction of(TiB2+ZrB2)particles alone has been shown to refine the α-Al matrix and reduce the secondary dendrite arm spacing.However,the presence of heavy agglomerates in composites can affect their performance.To address this issue,Sb is introduced to reduce the interfacial energy between the nanoparticles and the Al matrix,leading to a significant improvement in the agglomeration phenomenon of the nanoparticles.The synergistic introduction of in situ(TiB2+ZrB2)nanoparticles and Sb results in a substantial increase in the strength and plasticity of the composites compared to those of the A356 matrix.The tensile strength,yield strength,and elongation of the as-cast composites reach 216.4 MPa,119.7 MPa,and 7.2%,respectively,when the introductions of(TiB2+ZrB2)and Sb are 3 wt.%and 0.6 wt.%,respectively,which are 29.7%,23.5%,and 84.6%greater than the performance of the A356 matrix,respectively.关键词
原位纳米(TiB2+ZrB2)颗粒/A356 合金/Sb元素/显微组织/力学性能Key words
in situ(TiB2+ZrB2)nanoparticles/A356 alloy/Sb/microstructure/mechanical properties分类
通用工业技术引用本文复制引用
王启航,李靖,黄中月,严峰,祖方遒..原位纳米(TiB2+ZrB2)颗粒与Sb协同增强A356铝合金微观组织与力学性能[J].铸造技术,2024,45(4):356-362,7.基金项目
安徽省自然科学基金(2308085ME167) （2308085ME167）
