Scholarlink

<p>Developing advanced metal matrix composites (MMCs) with enhanced mechanical properties is crucial for meeting the demands of modern aerospace, automotive, and transportation industries. This study investigates the microstructural and mechanical effects of incorporating Ti<sub>3</sub>SiC<sub>2</sub> MAX phase particles into AA5083 aluminum alloy via friction stir processing (FSP) with various volume fractions (7, 10, 15, and 20% vol.). FSP effectively refines the grain structure and disperses Ti<sub>3</sub>SiC<sub>2</sub> particles homogeneously within the aluminum matrix. This microstructural modification significantly enhances both microhardness and ultimate compressive strength. Specifically, the average grain size in the dynamically recrystallized zone decreases by 85.7% with the addition of 20% Ti<sub>3</sub>SiC<sub>2</sub>, corresponding to a 39.8% increase in microhardness. Even at 7% Ti<sub>3</sub>SiC<sub>2</sub>, microhardness increases by 10.8%, from 83 to 92 HV. Ti<sub>3</sub>SiC<sub>2</sub> typically improves microhardness and compressive strength, but its influence on Young's modulus is more intricate. The results show fluctuations: 7% Ti<sub>3</sub>SiC<sub>2</sub> results in 76 GPa, decreasing slightly to 72 GPa at 10%, then increasing significantly to 83 GPa at 15%, before a significant decrease to 55 GPa at 20%. This complex behavior likely stems from factors like particle–matrix bonding and particle distribution. The reduction at 20% could indicate non-uniform distribution or issues with interfacial bonding at higher concentrations. This demonstrates the potential of FSP for developing high-performance aluminum matrix composites with enhanced mechanical properties.</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

Influence of Ti3SiC2 MAX Phase Reinforcement Particles on the Microstructure and Mechanical Properties of Friction Stir-Processed AA5083 Aluminum Alloy

  • 期刊论文

  • 发表日期：

    2025年3月14日

查看全文
  • Essam B. Moustafa,
  • Ziyad T. Algizani,
  • Waheed Sami Abushanab,
  • Ahmed O. Mosleh,
  • Asmaa M. Khalil

摘要

Developing advanced metal matrix composites (MMCs) with enhanced mechanical properties is crucial for meeting the demands of modern aerospace, automotive, and transportation industries. This study investigates the microstructural and mechanical effects of incorporating Ti3SiC2 MAX phase particles into AA5083 aluminum alloy via friction stir processing (FSP) with various volume fractions (7, 10, 15, and 20% vol.). FSP effectively refines the grain structure and disperses Ti3SiC2 particles homogeneously within the aluminum matrix. This microstructural modification significantly enhances both microhardness and ultimate compressive strength. Specifically, the average grain size in the dynamically recrystallized zone decreases by 85.7% with the addition of 20% Ti3SiC2, corresponding to a 39.8% increase in microhardness. Even at 7% Ti3SiC2, microhardness increases by 10.8%, from 83 to 92 HV. Ti3SiC2 typically improves microhardness and compressive strength, but its influence on Young's modulus is more intricate. The results show fluctuations: 7% Ti3SiC2 results in 76 GPa, decreasing slightly to 72 GPa at 10%, then increasing significantly to 83 GPa at 15%, before a significant decrease to 55 GPa at 20%. This complex behavior likely stems from factors like particle–matrix bonding and particle distribution. The reduction at 20% could indicate non-uniform distribution or issues with interfacial bonding at higher concentrations. This demonstrates the potential of FSP for developing high-performance aluminum matrix composites with enhanced mechanical properties.