| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 8015296 | Materials Letters | 2018 | 4 Pages |
Abstract
The effect of hydrogen content on room temperature compressive properties of Ti44Al6Nb (at.%) alloy was studied. The results show that hydrogen promotes a solid solution strengthening in TiAl alloys, the microhardness increases with increasing of hydrogen content, which is increased by 40% after hydrogenation with 1.22â¯at.% H. As hydrogen content increases, the ultimate compressive strength and fracture strain increases firstly and then decreases. The Ti44Al6Nb alloy exhibits higher compressive strength and plasticity after addition of 0.42â¯at.% H, which is enhanced by 10% and 31% respectively. The distinct effect of hydrogen on the mechanical properties of TiAl alloys is attributed to the hydrogen-promoted dislocation motion and hydrogen-induced solution strengthening.
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Authors
T.F. Ma, R.R. Chen, D.S. Zheng, J.J. Guo, H.S. Ding, Y.Q. Su, H.Z. Fu,