Effect of laser beam thermal shock on the helium ion irradiation damage behavior of W-TiC-Y2O3 composites

Meng–Yao Y. Xu, Lai–Ma M. Luo, Yue Xu, Xiang Zan, Qiu Xu, Kazutoshi Tokunaga, Xiao–Yong Y. Zhu, Yu–Cheng C. Wu

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

In this work, a W-TiC-Y2O3 composite was successfully prepared using a wet chemical method, and the thermal shock behavior of the composite was studied under a laser beam. The influence of the thermal shock of the laser-beamed W-TiC-Y2O3 composite on the radiation damage behavior of helium ions was also explored. The results show that after laser beam thermal shock, the W-TiC-Y2O3 composite exhibited ablation and remelting in the molten region. Three different morphologies were observed on the material surface after thermal shock: molten zone, heat-affected zone and unaffected zone. Second-phase agglomeration occurred in the heat-affected zone. After helium irradiation, nanotendrils are formed in the unaffected area and the heat-affected area. However, the degree of irradiation damage in the melting zone is much lighter. This is mainly due to the columnar structure in melting zone.

Original languageEnglish
Pages (from-to)198-203
Number of pages6
JournalJournal of Nuclear Materials
Volume509
DOIs
Publication statusPublished - Oct 1 2018

All Science Journal Classification (ASJC) codes

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

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