文献类型：期刊文献

英文题名：Research on tribological properties of new Ni-based single crystal alloy containing Re

作者：Li, Ben[1,2];Zhang, Yilin[1];Zhou, Hongyan[1];Liu, Gang[1];Li, Xuewu[3];Zhang, Zhengkai[1];Zhang, Quan[1]

机构：[1]Nanyang Inst Technol, Engn Res Ctr Addit Mfg Aeronaut Mat Henan Prov, Nanyang 473004, Henan, Peoples R China;[2]East China Univ Sci & Technol, Shanghai 200237, Peoples R China;[3]Xian Univ Sci & Technol, Xian 710054, Peoples R China

年份：2024

卷号：11

期号：10

外文期刊名：MATERIALS RESEARCH EXPRESS

收录：;EI(收录号：20244217205457);WOS:【SCI-EXPANDED(收录号:WOS:001325558200001)】；

基金：This study was supported by the National Natural Science Foundation of China (No. 12274245), China Postdoctoral Science Foundation(2021M691014), Key Scientific and Technological Projects of Henan Province (No. 232102230049), Shanxi Innovation Capability Support Program (No. 2021KJXX-38), Project of Startup Foundation for Doctoral Research of Nanyang Institute of Technology (NGBJ-2020-02) and the Project Supported by Youth Science Foundation of Henan Province(No. 232300420327).

语种：英文

外文关键词：ni-based single crystal alloy; tribological properties; molecular dynamics

摘要：The particles in high-temperature and high-speed airflow in the battlefield environment will form sliding friction and wear on the aeroengine turbine blades, thus reducing the service performance of the blades. However, few studies has been reported on the tribological properties of Ni-based single crystal alloy. Accordingly, the tribological properties of Ni-based single crystal alloys with different contents of Re (0 wt%, 1.5 wt%, 2.5 wt%, 3.5 wt%, 4.5 wt% and 5.5 wt%) are investigated by tribological experiments and molecular dynamics simulations in this paper. The results of tribological experiments show that Ni-based single crystal alloy without Re exhibits the characteristics of abrasive wear and adhesive wear, while the wear state is significantly improved after adding Re element. In particular, the worn surface of Ni-based single crystal alloy containing 5.5% Re (NSCA5) is the smoothest and only a few minor defects are observed. In addition, the micro-tribological characteristics of Ni-based single crystal alloy are analyzed by molecular dynamics simulations, the results show that Re atoms can inhibit the dislocation movement and reduce the system potential energy, which enhance the stability and hardness of Ni-based single crystal alloy, thereby the wear resistance of the material are improved.