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TEM characterization of the microstructure of hot-hydrostatically extruded 93W-4.9Ni-2.1Fe alloy

  • Yu Chen
  • , Yang Yu
  • , Wen Cong Zhan
  • , Er De Wang
  • Harbin Institute of Technology
  • School of Materials Science and Engineering, Harbin Institute of Technology Weihai

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The microscopic analysis of 93W-4.9Ni-2.1Fe (wt. %) tungsten heavy alloy by hot-hydrostatic extrusion with severe plastic deformation strengthening were experimentally investigated mainly by transmission electron microscopy. Due to the profound differences in hardness of the tungsten particles and the Ni-Fe-W matrix a special TEM specimen preparation method had to be employed.It was shown that the microstructure of the as-extruded alloy was characterized by elongated tungsten particles with refinement cellular sub-structures consisting of high-density dislocations embedded in a binding Ni-Fe-W matrix phase with fine dynamically re-crystallized grains.

Original languageEnglish
Title of host publicationMechanical Design and Power Engineering
Pages198-202
Number of pages5
DOIs
StatePublished - 2014
Externally publishedYes
Event2013 2nd International Conference on Mechanical Design and Power Engineering, ICMDPE 2013 - Beijing, China
Duration: 29 Nov 201330 Nov 2013

Publication series

NameApplied Mechanics and Materials
Volume490-491
ISSN (Print)1660-9336
ISSN (Electronic)1662-7482

Conference

Conference2013 2nd International Conference on Mechanical Design and Power Engineering, ICMDPE 2013
Country/TerritoryChina
CityBeijing
Period29/11/1330/11/13

Keywords

  • Hot-hydrostatic extrusion
  • Microscopic analysis
  • TEM
  • Tungsten heavy alloy

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