Design of (Nb, Mo)(40)Ti(30)Ni(30) alloy membranes for combined enhancement of hydrogen permeability and embrittlement resistance.
Design of (Nb, Mo)(40)Ti(30)Ni(30) alloy membranes for combined enhancement of hydrogen permeability and embrittlement resistance.
复制标题
氢渗透与抗脆化联合增强的(Nb,Mo)40Ti30Ni30合金膜设计
DOI：
10.1038/s41598-017-00335-0
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发表时间：
2017-03-16
影响因子：
4.6
通讯作者：
Fu H
中科院分区：
文献类型：
--
作者：
Li X;Liang X;Liu D;Chen R;Huang F;Wang R;Rettenmayr M;Su Y;Guo J;Fu H
研究了Mo替代Nb对Nb 40 Ti 30 Ni 30合金微观组织特征及氢的溶解、扩散和渗透的影响。铸态Nb 40 − xMoxTi 30 Ni 30（x = 0，5，10）合金由初生bcc-Nb相和二元共晶（bcc-Nb + B2-TiNi）组成。Mo替代Nb降低了合金中的氢溶解度，但可能增加（x = 5）或降低（x = 10）表观氢扩散率和渗透率。铸态Nb 35 Mo 5 Ti 30 Ni 30与Nb 40 Ti 30 Ni 30相比，表现出氢渗透性和抗脆化性的组合增强。这项工作证实了Mo是Nb中的理想合金元素，其可以有助于减少氢吸收和增加本征氢扩散，从而以最小的渗透性损失改善抗脆化性。
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.