|About this Abstract
||2019 TMS Annual Meeting & Exhibition
||Aluminum Alloys, Processing and Characterization
||D-44: Effects of Alloying Elements on Mechanical and Thermal Characteristics in Al-Si-Mg-(Cu) Foundry Alloys for Automotive Engine Components
||Seweon Choi, Yumi Kim, Youngchan Kim, Changseog Kang
|On-Site Speaker (Planned)
The effects of alloying elements on the mechanical and thermal characteristic in Al-Si-Mg-(Cu) alloys after heat treatment was investigated. The solid solution treatment of the samples was carried out at 535 °C for 6 hours before quenching. The aging treatment was conducted at the temperature ranging from 180 to 220 °C for 5 hours. When Cu was added to increase the mechanical strength of the samples, the thermal conductivity decreased. In order to increase the thermal conductivity while maintaining the mechanical strength, it is important to reduce the alloying elements. The addition of 0.1 wt.%Ti to an Al-6%Si-0.4%Mg-0.9%Cu alloy, the tensile strength was improved 18 MPa than that of the Ti-free alloy at the aging temperature of 180 °C. In the case of Cu-free Al-6%Si-0.4%Mg alloy, adding of Ti to the alloy did not affect the strength. The thermal conductivity was reduced by 8 W/m·K under the same aging conditions.
||Planned: Light Metals