Effect of high power ultrasound on mechanical properties of Al-Si alloys

[摘要] Effect of high power ultrasonic treatment on the solidification microstructures of Al-Si alloys containing varying content of solute Si (1, 2, 3 and 5 wt %) is investigated. Large variation in microstructures is seen and refinement of primary α-Al grains is observed. It is observed that increasing the weight percentage of solute along with ultrasonic treatment resulted in finer primary phase. By increasing the solute content from 1% to 5 wt.% in Al-Si alloys, hardness increased by about 38% without and 48% with ultrasonic treatment. Tensile strength of the alloys with ultrasonic treatment is higher as compared to those without ultrasonic treated.

[发布机构] Department of Metallurgical and Materials Engineering, Indian Institute of Technology, Roorkee; 247667, India^1

[效力级别] 机械制造

[关键词] High power ultrasound;High-power ultrasonics;Primary phase;Properties of Al;Solidification microstructures;Solute content;Ultrasonic treatments;Weight percentages