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Effect of Y2O3 Addition on the Microstructure, Wear Resistance, and Corrosion Behavior of W-4.9Ni-2.1Fe Heavy Alloy

  • Xuehui Zhang
  • Shengjian Zhu
  • Biao Zhang
  • Tahir Ahmad
  • Chunming Wang
  • Liangliang ZhouEmail author
  • Tongxiang LiangEmail author
  • Bin YangEmail author
Article
  • 13 Downloads

Abstract

Binding and particle phases are the two important parameters influencing materials properties. In this study, a series of novel W-4.9Ni-2.1Fe-xY2O3 (in weight%) alloys with different Y2O3 contents are prepared by secondary ball milling and spark plasma sintering (SPS) techniques to obtain uniformly distributed γ-(Ni, Fe) binding phases and finer grains. The microstructure, mechanical, wear resistance, and corrosion behavior of the sintered bodies with different Y2O3 were obtained by x-ray diffraction, scanning electron microscopy, Rockwell hardness tester, friction wear tester, and three-dimensional profile instruments. The results showed that a certain addition of Y2O3 led to refined grains and uniformed microstructures; but, if excessive, a weak grain refinement would be appeared. Moreover, the grain size tends to be stable with enhancing of the Y2O3 content. Considering properties such as density, hardness, compression yield strength, grain size, and uniform distribution of tungsten hard phase and γ-(Ni, Fe) binding phase, the comprehensive optimal amount of 0.7 wt.% of Y2O3 was attained for the alloy. Meanwhile, the SPS sintered body also exhibited the best friction, wear behavior, and corrosion resistance in 3.5% of NaCl solution.

Keywords

microstructure secondary ball milling spark plasma sintering tungsten heavy alloy yttrium oxide 

Notes

Acknowledgment

This study is financially supported by the National Key Research and Development Program of China (Grant No. 2016YFB0301400), the National Natural Science Foundation of China (Grant No.51871114 and 51804138), the Postdoctoral Science Foundation of China (2019M652290), the Postdoctoral Science Foundation of Jiangxi Province (3205700012 and 2018KY05), and the National Natural Science Foundation of Jiangxi Province (20181BBE58001).

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Copyright information

© ASM International 2019

Authors and Affiliations

  1. 1.Faculty of Materials Metallurgy and ChemistryJiangxi University of Science and TechnologyJiangxiChina
  2. 2.Institute of Advanced Materials and TechnologyUniversity of Science and Technology BeijingBeijingChina
  3. 3.Department of Metallurgy and Materials EngineeringCEET, University of the Punjab LahoreLahorePakistan
  4. 4.School of Materials Science and Engineering, Key Laboratory of Advanced Energy Storage Materials of Guangdong ProvinceSouth China University of TechnologyGuangzhouChina

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