Effect of ultrasonic degassing on performance of Al-based components

超声波脱气对铝基元件性能的影响(英文)

The effect of high intensity ultrasound based on the novel multi-frequency multimode modulated technology on the final density, porosity, mechanical and fatigue properties of an AlSi9Cu3(Fe) alloy after different processing time was studied. Reduced pressure test was used to evaluate the density of alloys. The tensile and fatigue tests were used to evaluate the static and dynamic properties for the different time of ultrasonic degassing, respectively. It is found that ultrasonic degassing is effective in reduction porosity as well as to improve the final density of castings. Furthermore, the experimental results suggest that the porosity level does not have a substantial influence on the static properties contrary to what is observed on fatigue properties.

采用基于多频多模调制技术的高强度超声波对Al Si9Cu3(Fe)合金进行处理,并研究超声处理时间对合金的最终密度、孔隙率,力学和疲劳性能的影响。使用减压试验评估合金的密度和样品的孔隙率。在旋转弯曲机上进行拉伸和疲劳试验,以评估样品分别经不同时间超声波脱气后的静态和动态性能。结果表明,超声波脱气可以有效地减少孔隙率并提高铸件的最终密度。此外,实验结果表明,与疲劳性能相反,孔隙率水平对静态性能没有实质性的影响。