Scholarlink

<p>Ultrasonic melt treatment technology and the addition of Al alloy grain refiners are two common methods to improve casting defects, ingot quality, and material properties. In this paper, a new process is proposed to use Al-5Ti-1B grain refiner directly as an ultrasonic sonotrode. Different ultrasonic power levels were applied to activate the Al-5Ti-1B refiner on 2219 Al alloy, studying their effects on microstructure and mechanical properties. The optimum ultrasonic power range for the Al-5Ti-1B ultrasonic sonotrode was determined. Results indicate that the grain refining effect is most effective at 350 W ultrasonic power. Specifically, the average grain size decreased from 485.7 to 148.2&#xa0;μm compared to untreated samples (0 W), achieving a grain refining rate of 69.5%. Additionally, the area fraction of the second phase decreased by 24.5 to 6.5%. Tensile strength, yield strength, and elongation were enhanced to 84.8, 71.2&#xa0;MPa, and 2.5%, respectively. This represents improvements of 14.7, 23.3, and 54.8% compared to ingots without ultrasonic treatment. The mechanism of the action of Al-5Ti-1B ultrasonic sonotrode on grain refinement and second phase refinement of 2219 Al alloy is also explained.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Effect of Al-5Ti-1B Ultrasonic Sonotrode During Melting on Microstructure and Mechanical Properties of 2219 Al Alloy

  • 期刊论文

  • 发表日期：

    2025年4月28日

查看全文
  • Renjun Hu,
  • Ripeng Jiang,
  • Ruiqing Li,
  • Aolei Fu,
  • Meizhen Yao

摘要

Ultrasonic melt treatment technology and the addition of Al alloy grain refiners are two common methods to improve casting defects, ingot quality, and material properties. In this paper, a new process is proposed to use Al-5Ti-1B grain refiner directly as an ultrasonic sonotrode. Different ultrasonic power levels were applied to activate the Al-5Ti-1B refiner on 2219 Al alloy, studying their effects on microstructure and mechanical properties. The optimum ultrasonic power range for the Al-5Ti-1B ultrasonic sonotrode was determined. Results indicate that the grain refining effect is most effective at 350 W ultrasonic power. Specifically, the average grain size decreased from 485.7 to 148.2 μm compared to untreated samples (0 W), achieving a grain refining rate of 69.5%. Additionally, the area fraction of the second phase decreased by 24.5 to 6.5%. Tensile strength, yield strength, and elongation were enhanced to 84.8, 71.2 MPa, and 2.5%, respectively. This represents improvements of 14.7, 23.3, and 54.8% compared to ingots without ultrasonic treatment. The mechanism of the action of Al-5Ti-1B ultrasonic sonotrode on grain refinement and second phase refinement of 2219 Al alloy is also explained.