The effects of molybdenum content on the dynamic properties of tungsten-based heavy alloys

Woei Shyan Lee, Tien Yin Chan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The effects of the content of molybdenum on the dynamic properties of tungsten heavy alloys were investigated. Increase in mechanical properties was observed in molybdenum-added tungsten heavy alloys, due to the refined microstructure. On the other hand, decrease in mechanical properties was also observed in the alloys with high molybdenum concentrations, due to the decreased strength of the matrix phase and the precipitation of an intermetallic phase. Hopkinson bar dynamic test under strain rates ranging from 2000 s-1 to 8000 s-1 at room temperature revealed that the flow stress of tungsten heavy alloys depended strongly on the strain, strain rate, and the content of molybdenum. The variation of flow stresses was caused by the competition between work hardening and heat softening in the materials at different strain rates. The high temperature strength of the matrix phase was increased by the addition of molybdenum, which enhanced the strength of the tungsten heavy alloys in high strain rate test.

Original languageEnglish
Title of host publicationProgress in Powder Metallurgy - Proceedings of the 2006 Powder Metallurgy World Congress and Exhibition (PM 2006)
PublisherTrans Tech Publications Ltd
Pages1293-1296
Number of pages4
EditionPART 2
ISBN (Print)0878494197, 9780878494194
DOIs
Publication statusPublished - 2007 Jan 1
Event2006 Powder Metallurgy World Congress and Exhibition, PM 2006 - Busan, Korea, Republic of
Duration: 2006 Sep 242006 Sep 28

Publication series

NameMaterials Science Forum
NumberPART 2
Volume534-536
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Other

Other2006 Powder Metallurgy World Congress and Exhibition, PM 2006
CountryKorea, Republic of
CityBusan
Period06-09-2406-09-28

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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    Lee, W. S., & Chan, T. Y. (2007). The effects of molybdenum content on the dynamic properties of tungsten-based heavy alloys. In Progress in Powder Metallurgy - Proceedings of the 2006 Powder Metallurgy World Congress and Exhibition (PM 2006) (PART 2 ed., pp. 1293-1296). (Materials Science Forum; Vol. 534-536, No. PART 2). Trans Tech Publications Ltd. https://doi.org/10.4028/0-87849-419-7.1293