Abstract：
:The effect of substitution of Nb by Mo in Nb40Ti30Ni30 was investigated with respect to microstructural features and hydrogen dissolution, diffusion and permeation. As-cast Nb40-xMoxTi30Ni30 (x = 0, 5, 10) alloys consist of primary bcc-Nb phase and binary eutectic (bcc-Nb + B2-TiNi). The substitution of Nb by Mo reduces the hydrogen solubility in alloys, but may increase (x = 5) or decrease (x = 10) the apparent hydrogen diffusivity and permeability. As-cast Nb35Mo5Ti30Ni30 exhibits a combined enhancement of hydrogen permeability and embrittlement resistance as compared to Nb40Ti30Ni30. This work confirms that Mo is a desirable alloying element in Nb that can contribute to a reduction in hydrogen absorption and an increase in intrinsic hydrogen diffusion, thus improving embrittlement resistance with minimal permeability penalty.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Li X,Liang X,Liu D,Chen R,Huang F,Wang R,Rettenmayr M,Su Y,Guo J,Fu Hdoi
10.1038/s41598-017-00335-0subject
Has Abstractpub_date
2017-03-16 00:00:00pages
209issue
1issn
2045-2322pii
10.1038/s41598-017-00335-0journal_volume
7pub_type
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