文献类型：期刊文献

英文题名：Exceptional combination of mechanical properties and cavitation erosion-corrosion resistance in a Fe 23.7 Co 23.8 Ni 23.8 Cr 23.7 Mo 5 multi-principal element alloy

作者：Niu, Jiacheng[1,2];Fu, Zhiqiang[1,2];Hou, Guoliang[3];Chen, Qiang[4];Yao, Ning[5];Chen, Weiping[1,2];Lu, Tiwen[5];Chu, Chenliang[1,2];Wen, Haiming[6]

机构：[1]South China Univ Technol, Guangdong Key Lab Adv Met Mat Proc, Guangzhou 510640, Guangdong, Peoples R China;[2]South China Univ Technol, Natl Engn Res Ctr Near Net Shape Forming Met Mat, Guangzhou 510640, Peoples R China;[3]Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China;[4]Southwest Technol & Engn Res Inst, Chongqing 400039, Peoples R China;[5]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China;[6]Missouri Univ Sci & Technol, Dept Mat Sci & Engn, Rolla, MO 65409 USA

年份：2024

卷号：196

外文期刊名：TRIBOLOGY INTERNATIONAL

收录：;EI(收录号：20240083780);WOS:【SCI-EXPANDED(收录号:WOS:001233866000001)】；

基金：Jiacheng Niu and Zhiqiang Fu acknowledge the financial support from the National Natural Science Foundation of China (Grant No. 52103360) , the Basic and Applied Basic Research Foundation of Guangdong Province (Grant No. 2023A1515012363) , and from ther Pearl River Talent Program (Grant No. 2021QN02C766) . Weiping Chen and Chenliang Chu wish to acknowledge the financial support from the Key-Area Research and Development Program of Guangdong Province (Grant No. 2018B090905002) . Guoliang Hou wish to acknowledge the National Natural Science Foundation of China (Grant No. 52175200) . Ning Yao and Tiwen Lu performed this research without funding sup-port. The results were reviewed, analyzed, and edited by Haiming Wen.

语种：英文

外文关键词：Multi-principal element alloy; Cavitation erosion-corrosion; Mechanical properties; Electrochemical corrosion

摘要：This study analyzed cavitation erosion (CE) and cavitation erosion-corrosion (CE-C) of single-phase face-centered cubic structured Fe23.7Co23.8Ni23.8Cr23.7Mo5 multi-principal element alloy (MPEA) with varying grain sizes obtained through post-deformation annealing (PDA). The average grain sizes of the samples after annealing at 1100 degrees C for 60 s, 1150 degrees C for 60 s, and 1100 degrees C for 200 s are 4.1 mu m, 10.3 mu m, and 15.2 mu m, respectively. Among them, the 4.1 mu m sample exhibits the best combination of high ultimate tensile strength (889 MPa) and large elongation (40.3%), as well as good electrochemical corrosion resistance in NaCl solution. Under the conditions of CE and CE-C for a duration of 10 h, the 4.1 mu m specimen exhibits cumulative mass losses of approximately 1.4 mg and 2.6 mg, respectively. In contrast, under identical conditions, the 316 L SS registers cumulative mass losses of approximately 16.7 mg and 24.8 mg, respectively. Due to the excellent mechanical properties and work hardening ability of the 4.1 mu m sample, it can effectively resist the plastic deformation caused by cavitation erosion, reducing mass loss. In addition, the stable passivation film enhances its resistance to Cl- destruction, thus demonstrating notable corrosion resistance. Ultimately, under conditions where cavitation erosion and corrosion coexist, these combined properties enable the 4.1 mu m sample to exhibit the least mass loss and damage.