Open AccessArticle
Microstructure, Mechanical and Tribological Properties of Cu40Zn-Ti3AlC2 Composites by Powder Metallurgy
by
Fangdian Peng, Shidong Zhou, Tao Yang, Liwei Wu, Jianbo Wu, Puyou Ying, Ping Zhang, Changhong Lin, Yabo Fu, Zhibiao Tu, Tianle Wang, Xin Zhang, Nikolai Myshkin and Vladimir Levchenko
Lubricants 2024, 12(9), 306; https://doi.org/10.3390/lubricants12090306 (registering DOI) - 31 Aug 2024
Abstract
The exploration of unleaded free-cutting Cu40Zn brass with excellent mechanical and tribological properties has always drawn the attention of researchers. Due to its attractive properties combining metals and ceramics, Ti
3AlC
2 was added to Cu40Zn brass using high-energy milling and hot-pressing
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The exploration of unleaded free-cutting Cu40Zn brass with excellent mechanical and tribological properties has always drawn the attention of researchers. Due to its attractive properties combining metals and ceramics, Ti
3AlC
2 was added to Cu40Zn brass using high-energy milling and hot-pressing sintering. The effects of Ti
3AlC
2 on the microstructure, mechanical and tribological properties of Cu40Zn-Ti
3AlC
2 composites were studied. The results showed that Ti
3AlC
2 could suppress the formation of ZnO by adsorbing oxygen impurity and promote the formation of the β phase by releasing the β-forming element Al to the substrate. The hardness and wear resistance of Cu40Zn-Ti
3AlC
2 composites increased with increasing Ti
3AlC
2 content from 0 to 5 wt.%. The proper Ti
3AlC
2 additive was beneficial to both the strength and plasticity of the composites. The underlying mechanisms were discussed.
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