Effect of second-phase particles on the properties of W-based materials under high-heat loading

Xiao–Yue –Y Tan, Ping Li, Lai–Ma –M Luo, Qiu Xu, Kazutoshi Tokunaga, Xiang Zan, Yu–Cheng –C Wu

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Abstract

W, W-TaC, and W-TiC materials were subjected to heat–load tests in an electron beam facility (10 keV, 8 kW) at 100 pulses. After heat loading, severe cracks and plastic deformation were detected on the surface of pure W materials. However, plastic deformation was the primary change on the surfaces of W-TaC and W-TiC alloys. This phenomenon was due to the second-phase (TaC and TiC) particles dispersed in the W matrix, which strengthened the grain boundaries and prevented crack formation and propagation. In addition, the microhardness of W and W-TiC obviously decreased, whereas that of W-TaC did not change considerably before and after heat loading.

Original languageEnglish
Pages (from-to)399-404
Number of pages6
JournalNuclear Materials and Energy
Volume9
DOIs
Publication statusPublished - Dec 1 2016

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All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Materials Science (miscellaneous)
  • Nuclear Energy and Engineering

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