Estimation of three-dimensional mean dihedral angle in a W–Ni–Fe alloy liquid-phase sintered in microgravity

The three-dimensional mean dihedral angle of impinging W grains is estimated in a 50 wt.% W–35 wt.% Ni–15 wt.% Fe alloy liquid-phase sintered in microgravity at 1500 °C for times ranging from 1 to 600 min using unbiased stereology and automated image analysis. The estimated mean dihedral angles are...

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Veröffentlicht in:Scripta materialia 2009-12, Vol.61 (12), p.1101-1104
Hauptverfasser: Goodwin, W.B., Bharadwaj, M., Mao, Y., Gokhale, A.M., Gurumurthy, A., German, R.M.
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Sprache:eng
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Zusammenfassung:The three-dimensional mean dihedral angle of impinging W grains is estimated in a 50 wt.% W–35 wt.% Ni–15 wt.% Fe alloy liquid-phase sintered in microgravity at 1500 °C for times ranging from 1 to 600 min using unbiased stereology and automated image analysis. The estimated mean dihedral angles are in the range 50 ± 3°. The mean dihedral angle does not vary significantly with the liquid-phase sintering time, although the mean intercept size of the W grains increases almost by a factor of 5.
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2009.08.043