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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
In-situ monitoring of phase transformation in Ni3Al based alloys by means of hydrogen permeation measurement
 Rothová, Věra ; Čermák, Jiří
Nickel aluminide Ni3Al crystallizes in the cubic L12 structure (Cu3Au type). It is known from the literature that this structure remains unchanged up to the melting point. However, under certain circumstances, it can change from L12 to other non-cubic ordered crystal structures. There have been reported some data which indicate that the presence of hydrogen may facilitate the change in the structure. Present detailed study of hydrogen permeation behavior in both the Ni3Al and the CMSX-4 has shown very sensitive changes of permeation rate depending upon temperature variations.
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Difúze hliník substituujících prvků podél hranic v Ni3Al
 Rothová, Věra ; Čermák, Jiří
The grain boundary diffusion of 67Ga and 68Ge as Al-simulating elements in the Ni-rich Ni3Al alloys has been investigated using the serial sectioning method
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