Home / Store / Journals / Electronic Articles / Fusion Science and Technology / Volume 53 / Number 3
F. L. Chong, J. L. Chen, Z. J. Zhou, J. G. Li
Fusion Science and Technology
Volume 53 / Number 3 / April 2008 / Pages 854-859
Format:electronic copy (download)
Five-layered W/Cu functionally graded materials with fine grain sizes of 0.2, 1, and 7 m were fabricated by resistance sintering under ultrahigh pressure. Microstructure analysis found that they have a good graded composition distribution and mechanical properties. After about 2000 s edge plasma exposure in the HT-7 superconducting tokamak, the results indicated that the fine-grained tungsten can enhance mechanical strength, and it is favorable to hold back crack propagation and growth; however, the effects on impurity deposition and compound formation were not obvious.
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