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Strengthening Research of Mg-Li Alloy Based on Ultrasonic Nanocrystal Surface Modification
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[1]ZOU Yun,WANG Qilong,LI Yang,et al.Strengthening Research of Mg-Li Alloy Based on Ultrasonic Nanocrystal Surface Modification[J].Journal of Zhengzhou University (Engineering Science),2020,41(05):26-30.[doi:10.13705/j.issn.1671-6833.2020.05.008]
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Journal of Zhengzhou University (Engineering Science)[ISSN 1671-6833/CN 41-1339/T] Volume: 41卷 Number of periods: 2020 05 Page number: 26-30 Column: Public date: 2020-10-01
Title:
Strengthening Research of Mg-Li Alloy Based on Ultrasonic Nanocrystal Surface Modification
Author(s):
ZOU Yun 1; 2;  WANG Qilong1; 2;  LI Yang1; 2;  LU Zhengtong1; 2;  LIU Shuhao1; 2;  ZHANG Yinxia1; 2
1.School of Mechanical and Power Engineering, Zhengzhou University, Zhengzhou 450001, China; 2.Henan Province Engineering Laboratory of Anti-Fatigue Manufacturing Technology, Zhengzhou University, Zhengzhou 450001, China
Keywords:
ultrasonic nanocrystal surface modification technology;  Mg-Li alloy;  orthogonal experiment;  multi-objective optimization design
CLC:
-
DOI:
10.13705/j.issn.1671-6833.2020.05.008
Abstract:
To obtain the influence of process parameters (static pressure, scanning speed and feed) of ultrasonic nanocrystal surface modification (UNSM) technology on the surface performance indexes (microhardness, surface roughness and depth of hardening layer) of LA106 magnesium-lithium (Mg-Li) alloy, the microhardness tester and the three-dimensional surface topography measurement system were utilized to test the microhardness and surface roughness of LA106 Mg-Li alloy after UNSM treatments. Combined with the saliency method, the orthogonal experimental results were analyzed, and the multi-objective optimization design method was used to study the comprehensive enhancement effect under the different UNSM process parameters. The results showed that the order of UNSM process on the comprehensive enhancement effect of LA106 Mg-Li alloy was as follows: static pressure, feed, and scanning speed. After multi-objective optimization design, the optimal combination of UNSM process parameters of LA106 Mg-Li alloy was obtained through intuitive analysis: static pressure of 0.3 MPa, scanning speed of 1 500 mm/min and feed of 0.05 mm. Therefore, the effect of static pressure should be mainly considered when UNSM technology was utilized to strengthen LA106 Mg-Li alloy.
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