A heat treatment free high-strength high-thermal-conductivity die casting Al-Si alloy and a preparation method thereof
By alloying with Si, Fe, Mn, Ge and Tm elements and using a high-cooling-rate die-casting process, a high-strength and high-thermal-conductivity Al-Si alloy was prepared, solving the problems of insufficient mechanical and thermal conductivity in the existing technology and realizing high-performance die-casting parts without heat treatment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- DALIAN YAMING AUTOMOTIVE PARTS
- Filing Date
- 2026-06-04
- Publication Date
- 2026-07-17
AI Technical Summary
Existing Al-Si alloys cannot simultaneously achieve both mechanical and thermal conductivity properties in automotive and 5G communication applications, and the porosity defects in die-cast alloy parts cannot be further improved through heat treatment to enhance their overall performance.
By alloying with Si, Fe, Mn, Ge and Tm elements and combining with a high-cooling-rate die-casting process, a high-strength, high-thermal-conductivity Al-Si alloy without heat treatment was prepared. The thermal conductivity and mechanical properties of the alloy were optimized by forming a Si (Ge) solid solution with Ge and Tm solid solution in α-Al.
This technology enables Al-Si alloy die castings with high strength and excellent thermal conductivity to be obtained without heat treatment, avoiding the defects of heat treatment and ensuring the forming quality and performance stability of the die castings.
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Figure CN122406044A_ABST