Effects of Ti on microstructure, mechanical properties and biodegradation behavior of Zn-Cu alloy

•CuZn5 phase was further refined with increasing Ti content.•Mechanical properties of the as-cast alloys were enhanced by Ti addition.•Degradation rates of the as-cast alloys were improved by Ti addition. Effects of Ti on microstructure, mechanical properties and biodegradation behavior of Zn-2Cu al...

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Bibliographic Details
Published in:Materials letters 2019-06, Vol.244, p.119-122
Main Authors: Zhang, L., Liu, X.Y., Huang, H., Zhan, W.
Format: Article
Language:English
Subjects:
Alloys
Biodegradation
Biodegradation behavior
Biomaterials
Compressive strength
Copper base alloys
Elongation
Materials science
Mechanical properties
Mechanical property
Microstructure
Morphology
Phase transitions
Titanium
Ultimate tensile strength
Yield strength
Yield stress
Zn-based alloy
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Summary:•CuZn5 phase was further refined with increasing Ti content.•Mechanical properties of the as-cast alloys were enhanced by Ti addition.•Degradation rates of the as-cast alloys were improved by Ti addition. Effects of Ti on microstructure, mechanical properties and biodegradation behavior of Zn-2Cu alloy were investigated. Results show that the Zn-2Cu alloy consisted of Zn matrix and CuZn5 phase, but TiZn16 phase newly formed with Ti addition. As Ti content increased, CuZn5 phase was further refined; TiZn16 phase gradually changed from fibrous to discontinuous reticular morphology. The Zn-2Cu-0.05Ti alloy exhibited the optimal mechanical properties, and the yield strength, compressive yield strength, ultimate tensile strength and elongation increased by 37.2%, 52.9%, 38.7% and 19.1% respectively, compared with Zn-2Cu alloy. With Ti addition, the degradation rates of the alloys were greatly improved towards the clinical requirements.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2019.02.071