Version 1
: Received: 6 December 2023 / Approved: 6 December 2023 / Online: 6 December 2023 (10:40:33 CET)
How to cite:
Lee, Y.; Kwon, H. Effect of Sr on Microstructures and Wear Properties in Sr-modified Hypoeutectic Al-Si-Cu-Mg Alloys. Preprints2023, 2023120381. https://doi.org/10.20944/preprints202312.0381.v1
Lee, Y.; Kwon, H. Effect of Sr on Microstructures and Wear Properties in Sr-modified Hypoeutectic Al-Si-Cu-Mg Alloys. Preprints 2023, 2023120381. https://doi.org/10.20944/preprints202312.0381.v1
Lee, Y.; Kwon, H. Effect of Sr on Microstructures and Wear Properties in Sr-modified Hypoeutectic Al-Si-Cu-Mg Alloys. Preprints2023, 2023120381. https://doi.org/10.20944/preprints202312.0381.v1
APA Style
Lee, Y., & Kwon, H. (2023). Effect of Sr on Microstructures and Wear Properties in Sr-modified Hypoeutectic Al-Si-Cu-Mg Alloys. Preprints. https://doi.org/10.20944/preprints202312.0381.v1
Chicago/Turabian Style
Lee, Y. and Hansang Kwon. 2023 "Effect of Sr on Microstructures and Wear Properties in Sr-modified Hypoeutectic Al-Si-Cu-Mg Alloys" Preprints. https://doi.org/10.20944/preprints202312.0381.v1
Abstract
Hypoeutectic Al-Si-Cu-Mg alloys are promising candidates for use in automobile parts. Therefore, various attempts have been made to develop alternative casting technologies to improve the mechanical properties of cast alloys. In this study, the effects of modification with different levels of strontium (Sr) on primary and eutectic silicon (Si) in hypoeutectic Al-Si-Cu-Mg alloys were investigated. Using a gravity cast process, the Sr-modified samples were prepared from melts with four levels (100, 200, 300, and 400 ppm) of Sr. In addition, the wear properties of the cast samples were studied using a block-on-ring wear-testing machine. The sizes of the primary Si phases increased with increasing Sr content in the alloys. Moreover, more finely dispersed eutectic Si was observed with higher Sr content. In frictional wear tests, the specific wear rates of the test specimens decreased as the Sr content increased from 200 to 400 ppm. Coarse Si phases are considered to act as solid lubricants in the contact region during sliding.
Engineering, Metallurgy and Metallurgical Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
