Journal
JOURNAL OF MAGNESIUM AND ALLOYS
Volume 9, Issue 5, Pages 1632-1643Publisher
KEAI PUBLISHING LTD
DOI: 10.1016/j.jma.2020.08.019
Keywords
Dissoluble magnesium alloys; Microstructure; Mechanical properties; Corrosion behaviors; Fracturing tools
Categories
Funding
- National Natural Science Foundation of China [51671017, 51971020]
- Major State Research and Development Program of China [2016YFB0300801]
- Beijing Municipal Natural Science Foundation [2202033]
- Beijing Laboratory of Metallic Materials and Processing for Modern Transportation
- State Key Laboratory of Solidification Processing in NWPU [SKLSP201835]
- Fundamental Research Funds for the Central Universities [FRF-IC-19-010, FRF-IC-19-015]
- Opening Research Fund of State Key Laboratory for Advanced Metals and Materials [2018-Z04]
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Magnesium alloys have attracted more attention recently as a novel functional material for the fabrication of fracturing tools due to their relatively high mechanical properties and fast dissolubility ability. The addition of nickel influences phase precipitation behaviors and mechanical properties of the alloys. The invention of these alloys provides more material alternatives for the fabrication of dissoluble fracturing tools.
Magnesium alloys, a novel functional material for the fabrication of fracturing tools, are being paid more and more attentions recently due to their relatively high mechanical properties and fast dissolubility ability after fracturing. In this study, the novel extruded Mg-10Gd-3Y-0.3Zr-xNi alloys will be reported and their microstructure, mechanical and corrosion behaviors will be also studied. The results show that Ni contents influence phase precipitation behaviors. With adding 0.2 wt% Ni, a large amount of Zr7Ni10 phases will be precipitated insides alpha-Mg matrix, directly leading to degradation of strength and large corrosion rate. With further increasing Ni contents, the precipitation phases can be changed from Mg5RE to 18R-LPSO structure, resulting in higher mechanical properties and faster corrosion rate. Moreover, adding Ni element also change the texture orientation by influencing the precipitation behavior of the alloys. The alloys invented in this paper have attained the highest compressive and tensile properties among all the reported dissoluble magnesium alloys. This work is beneficial in understanding the role of Ni in the magnesium alloys and provides more materials alternatives for the fabrication of dissoluble fracturing tools. (C) 2020 Chongqing University. Publishing services provided by Elsevier B.V. on behalf of KeAi Communications Co. Ltd.
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