Scholarlink

<p>This study involved the fabrication of AZ61 magnesium alloy reinforced with nano-sized Zinc Oxide (nZnO) particles by a squeeze-casting process, and examined its properties at different melt temperatures (720, 750, 780, and 810&#xa0;°C). Mechanical characterization encompassed tensile, hardness, and impact, also wear testing, supplemented by comprehensive microstructural investigation were studied. Experimental findings indicated that melt temperature is crucial in influencing the composite’s ultimate characteristics. A melt temperature of 780&#xa0;°C resulted in superior dispersion, a refined grain structure, and improved compatibility for plastic deformation, attributed to sufficient superheat and efficient stirring at a squeeze pressure of 80&#xa0;MPa. The AZ61/nZnO composite demonstrated enhanced wear resistance relative to the base alloy, with diminished wear rates resulting from the synergistic effects of nZnO reinforcements, optimized load transmission, and decreased porosity. The wear rate analysis emphasized the effects of sliding velocity, applied stress, and surface topography on material degradation during sliding. Microstructural analyses validated superior particle dispersion and diminished porosity at optimal values, directly enhancing mechanical performance.</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

Performance evaluation of AZ61/nZnO composite: insights into squeeze casting

  • 期刊论文

  • 发表日期：

    2026年5月7日

查看全文
  • Jasgurpreet Singh Chohan,
  • Hrushikesh Sarangi,
  • Ravi Subramanyam,
  • S. Magibalan,
  • A. Thanikasalam,
  • Srinivasan Suresh Kumar

摘要

This study involved the fabrication of AZ61 magnesium alloy reinforced with nano-sized Zinc Oxide (nZnO) particles by a squeeze-casting process, and examined its properties at different melt temperatures (720, 750, 780, and 810 °C). Mechanical characterization encompassed tensile, hardness, and impact, also wear testing, supplemented by comprehensive microstructural investigation were studied. Experimental findings indicated that melt temperature is crucial in influencing the composite’s ultimate characteristics. A melt temperature of 780 °C resulted in superior dispersion, a refined grain structure, and improved compatibility for plastic deformation, attributed to sufficient superheat and efficient stirring at a squeeze pressure of 80 MPa. The AZ61/nZnO composite demonstrated enhanced wear resistance relative to the base alloy, with diminished wear rates resulting from the synergistic effects of nZnO reinforcements, optimized load transmission, and decreased porosity. The wear rate analysis emphasized the effects of sliding velocity, applied stress, and surface topography on material degradation during sliding. Microstructural analyses validated superior particle dispersion and diminished porosity at optimal values, directly enhancing mechanical performance.