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Journal Article

Strong-yet-ductile Ti−Zr alloys through high concentration of oxygen strengthening

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He,  Junyang
Atom Probe Tomography, Microstructure Physics and Alloy Design, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society;

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Citation

Liu, Y., Tang, H., Huang, Q., Zhao, D., He, J., Cao, Y., et al. (2020). Strong-yet-ductile Ti−Zr alloys through high concentration of oxygen strengthening. Transactions of Nonferrous Metals Society of China (English Edition), 30(9), 2449-2458. doi:10.1016/S1003-6326(20)65391-2.


Cite as: https://hdl.handle.net/21.11116/0000-0009-6E3F-7
Abstract
Ti−Zr alloys (oxygen content 0.42−0.54 wt.) were prepared via powder metallurgy and hot working. The results indicate that the Ti−Zr alloys exhibit Zr-rich and Zr-lean areas with the same α-phase structure, and the Zr-rich area shows a slightly higher oxygen content and a much finer grain size. The Ti−Zr alloys present a good combination of high strength (σs=700−900 MPa) and total elongation (gt;20), and solid solution strengthening of oxygen plays a major role. Zr does not influence much the oxygen-induced brittleness due to its high structural similarity to Ti. Therefore, the high value of 0.54 wt. is still within the critical oxygen content for the ductile-to-brittle transition of Ti and does not degrade the ductility. © 2020 The Nonferrous Metals Society of China
 
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