Scholarlink

<p>This study investigates the die-casting process of lens brackets using semi-solid 6061 aluminum alloy slurry prepared by radial forging and partial remelting, including the slurry flow behavior and microstructure evolution. Firstly, the semi-solid 6061 aluminum alloy slurry was obtained through multi-pass radial forging and isothermal heating. Subsequently, numerical simulations were employed to analyze the distribution of flow-induced shear stress and die-casting pressure during mold filling, identifying the locations where crack and tearing defects formed. Under process parameters: slurry temperature is 645&#xa0;°C, mold temperature is 200&#xa0;°C, injection speed is 0.5&#xa0;m/s, complete lens bracket components were successfully produced with maximum dimensional errors below 0.18&#xa0;mm. Finally, the relationship between slurry flow behavior and microstructure evolution was examined. The results demonstrate that flow-induced shear stress effectively breaks the intergranular bridges, dispersing the coalesced grains and thereby achieving grain refinement.</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

Mold-filling behavior and microstructure evolution of semi-solid 6061 aluminum alloy slurry in die-casting of bracket parts

  • 期刊论文

  • 发表日期：

    2025年11月20日

查看全文
  • Shuangjiang Li,
  • Shengdun Zhao,
  • Fan Li,
  • Ming Chang,
  • Yongfei Wang

摘要

This study investigates the die-casting process of lens brackets using semi-solid 6061 aluminum alloy slurry prepared by radial forging and partial remelting, including the slurry flow behavior and microstructure evolution. Firstly, the semi-solid 6061 aluminum alloy slurry was obtained through multi-pass radial forging and isothermal heating. Subsequently, numerical simulations were employed to analyze the distribution of flow-induced shear stress and die-casting pressure during mold filling, identifying the locations where crack and tearing defects formed. Under process parameters: slurry temperature is 645 °C, mold temperature is 200 °C, injection speed is 0.5 m/s, complete lens bracket components were successfully produced with maximum dimensional errors below 0.18 mm. Finally, the relationship between slurry flow behavior and microstructure evolution was examined. The results demonstrate that flow-induced shear stress effectively breaks the intergranular bridges, dispersing the coalesced grains and thereby achieving grain refinement.