Fine-grained W-Ni-Fe heavy alloys prepared by spark plasma sintering

Yanjiao J. Wu, Yunkai K. Li, Donghui H. Yu

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

2 Citations (Scopus)

Abstract

Fine-grained W-Ni-Fe heavy alloys (WHAs) with grain size of about 1-3μm were obtained by Spark Plasma Sintering (SPS) process. The composition of the alloy is consisted of 65 to 75 wt % W, with a Ni/Fe ratio ranging from zero to 7/3. In the lower sintering temperature range of 1100-1300°C, the WHAs showed the highest relative density of 98.6%, and when the sintering temperature was 1250 °C, the relative density of the WHAs prepared by the same techniques increased by decreasing of the content of W. Meanwhile the relative density of the alloy also increased with an increase of Ni /Fe ratio. The results show that the static tensile properties of the WHAs have a close relationship with the ratio of Ni / Fe. The tensile strength and the ductility of the sample W70-Ni21-Fe9 was 890 MPa and 3%. Furthermore, the dynamic compression strength of W70-Ni21-Fe9 was 1744 MPa.

Original languageEnglish
Title of host publicationSpecial and High Performance Structural Materials
EditorsYafang Han, Ying Wu, Guangxian Li, Fusheng Pan, Runhua Fan, Xuefeng Liu
PublisherTrans Tech Publications Ltd.
Pages745-752
Number of pages8
ISBN (Print)9783038357612
DOIs
Publication statusPublished - 2016
Externally publishedYes
EventChinese Materials Conference on Special and High Performance Structural Materials, CMC 2015 - Guiyang, China
Duration: 10 Jul 201514 Jul 2015

Publication series

NameMaterials Science Forum
Volume849
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Conference

ConferenceChinese Materials Conference on Special and High Performance Structural Materials, CMC 2015
Country/TerritoryChina
CityGuiyang
Period10/07/1514/07/15

Keywords

  • Heavy alloys
  • Mechanical properties
  • Spark plasma sintering
  • W-Ni-Fe alloys

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