5G 基站散热器用高导电(热)压铸 Al-Si-Fe 铝合金的热力学设计与试验

Translated title of the contribution: Thermodynamic Design and Experiment on High Conductivity Die-casting Al-Si-Fe Aluminum Alloy for 5G Base Station Heat Sink

Shuang Yang, Junjie Wu, Mengmeng Wang, Zhongjia Huang, Tong Liu, Yu Zhao, Ronghui Hong, Yingwu Yao, Jun Wang

Research output: Contribution to journalArticlepeer-review

Abstract

In view of the inversion problem between strength and electrical(thermal)conductivity of die-cast aluminum heat sinks in 5G base stations,effects of aging treatment on microstructure and conductivity of die-cast Al-7.5Si-0.8Fe aluminum alloys were investigated through a combination of thermodynamic calculations and experimental research by PANDAT thermodynamic calculations,metallographic microscopy,scanning electron microscopy,X-ray diffraction,and transmission electron microscopy. The results indicate that the conductivity of alloy is significantly improved after heat aging treatment at 320 ℃ for 1 h. Al-Fe-Si ternary phases and Si phase are precipitated along the grain boundaries and interior,respectively,thus reducing the solid solubility of Fe and Si in Al matrix. In addition,the continuity of eutectic Si network is deteriorated after aging,accompanied with the increased connectivity of the aluminum matrix,which is the main reason for the enhancement of conductivity.

Translated title of the contributionThermodynamic Design and Experiment on High Conductivity Die-casting Al-Si-Fe Aluminum Alloy for 5G Base Station Heat Sink
Original languageChinese (Traditional)
Pages (from-to)959-964
Number of pages6
JournalTezhong Zhuzao Ji Youse Hejin/Special Casting and Nonferrous Alloys
Volume44
Issue number7
DOIs
StatePublished - Jul 2024
Externally publishedYes

Fingerprint

Dive into the research topics of 'Thermodynamic Design and Experiment on High Conductivity Die-casting Al-Si-Fe Aluminum Alloy for 5G Base Station Heat Sink'. Together they form a unique fingerprint.

Cite this