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| 1 | 硫化锌、锶复合变质对过共晶铝硅合金组织的影响显示文摘以Al-24Si合金为研究对象,通过添加不同含量的ZnS中间体和Al-Sr中间合金作为变质剂,利用金相显微镜(OM),X射线衍射仪(XRD)、能量分散谱仪(EDS)等分析手段研究了亚微米级ZnS、Sr复合变质对Al-24Si合金组织形貌的影响,结果表明:亚微米级ZnS与Sr复合变质能同时细化初晶硅和共晶硅,二者不会干扰各自的变质效果,可将初晶硅平均尺寸由120μm细化至30μm以下,共晶硅由针片状变质至短棒状或纤维状. | 矫鹏飞 李成栋 王鹰 朱士伟 | 2020 | 青岛科技大学学报(自然科学版)2020，41，2： | 2 |
| 2 | An Al-12Si/ZnS powder inoculant for eutectic silicon in Al-12Si alloy显示文摘To obtain high-performance Al-Si-based cast alloys,refinement and modification of Si phases are required.An Al-12Si/ZnS powder inoculant was designed and fabricated using a chemical bath deposition method.The efficiency of the inoculant for modifying the eutectic Si phase in as-cast Al-12Si alloy was studied.Results show that Al-12Si/ZnS powder can significantly refine the eutectic Si in Al-Si cast alloys.The best refinement effect for eutectic Si is achieved with 17.5wt.%Al-12Si/ZnS powder.Coarse long needle-shaped eutectic Si with a length of 18μm was modified into approximately spherical shape with a diameter of 6.53μm,which is evenly distributed throughout the alloy.The E2EM model calculation indicates that the inter-plane misfit(F_(p))and inter-atomic spacing misfit(F_(r))between ZnS and Si are all less than 0.5%,which confirms that ZnS is a potential nucleation site for Si phase.The hardness,tensile strength,and elongation of Al-12Si alloys modified with 17.5%Al-12Si/ZnS powder increase 6.30%,16.18%and 55.45%,respectively,compared to the unmodified Al-12Si alloy.The fracture behavior of the alloy with 17.5wt.%Al-12Si/ZnS powder is dominated by transgranular fracture supplemented by intergranular fracture. | Ying Wang Pan-yu Chen Yu-hui Lin Mei Zhao Cheng-dong Li | 2022 | China Foundry2022，19，2： | 0 |
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