Enhanced mechanical properties and degradation rate of Mg-Ni-Y alloy by introducing LPSO phase for degradable fracturing ball applications

作     者：Jingfeng Wang Shiqing Gao Xiuying Liu Xing Peng Kui Wang Shijie Liu Weiyan Jiang Shengfeng Guo Fusheng Pan Jingfeng Wang;Shiqing Gao;Xiuying Liu;Xing Peng;Kui Wang;Shijie Liu;Weiyan Jiang;Shengfeng Guo;Fusheng Pan

作者机构：National Engineering Research Center for Magnesium AlloysCollege of Materials Science and EngineeringChongqing UniversityChongqing 400044China Faculty of Materials and EnergySouthwest UniversityChongqing 400715China 

出 版 物：《Journal of Magnesium and Alloys》 (镁合金学报（英文）)

年 卷 期：2020年第8卷第1期

页      面：127-133页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：This work is financially supported by the National Key Research and Development Program of China(Grant No.2016YFB0301100) the Chongqing Foundation and Advanced Research Project(Grant No.cstc2019jcyj-zdxmX0010) the Natural Science Foundation Commission of China(Grant No.51571044 and 51874062) Fundamental Research Funds for the Central Universities(Grant No.2018CDGFCL0005 and 2019CDXYCL0031) 

主　　题：Mg-Ni-Y magnesium alloys Fracturing ball LPSO phase Degradation rate Mechanical properties 

摘      要：In this work,as-cast Mg-Ni-Y alloys were proposed to develop a feasible material for fracturing balls,and their mechanical performance and corrosion behavior were systematically *** period stacking order(LPSO)phase was firstly introduced to improve both the mechanical properties and degradation rate of magnesium *** the increase of LPSO phase,the compressive strength was improved significantly,while the elongation of the alloys decreased owing to the relatively brittle nature of LPSO *** to the higher corrosion potential of LPSO phase,the LPSO phase can accelerate the corrosion process by providing more ***,the LPSO phase would serve as the corrosion barrier between the corrosion medium and the matrix when the contents of LPSO phase are too high in Mg92.5Ni3Y4.5 and Mg87.5Ni5Y7.5 ***-cast Mg97.5Ni1Y1.5 alloy with satisfactory mechanical properties and rapid degradation rate was successfully developed,exhibiting a high degradation rate of 6675 mm/a(93℃)in 3 wt.%KCl solution and a favorable ultimate compressive strength of 410 *** degradation rate of Mg97.5Ni1Y1.5 alloy is 2-5 times of the current commercial magnesium alloy fracturing materials.