Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7982496 | Materials Science and Engineering: A | 2013 | 5 Pages |
Abstract
Microstructure and mechanical properties of hot-rolled TiZrAl alloys were studied. The results showed that the microstructure of all alloys mainly consisted of lamellar α phase. The thickness of the lamellar α phase gradually increased with increasing aluminum content. Moreover, large numbers of stacking faults was observed in Ti-25Zr-15Al (at%) alloy. The aluminum addition strongly affected the mechanical properties of the TiZrAl alloys. With increased aluminum contents, the strength increased evidently, whereas, the elongation decreased. Ti-25Zr-15Al (at%) with the highest aluminum contents in all alloys, possessed the highest tensile strength (Ïb=1319 MPa), i.e. strengthened by 41% compared with Ti-25Zr (at%) alloy, and still retained the elongation of 5.5%. According to the classical size and/or modulus misfits model, the effect of aluminum addition was significant in TiZr alloys because of the considerable misfits between aluminum and zirconium.
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Authors
X.J. Jiang, R. Jing, C.Y. Liu, M.Z. Ma, R.P. Liu,