期刊
MATERIALS TECHNOLOGY
卷 34, 期 10, 页码 592-601出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/10667857.2019.1603657
关键词
Magnesium alloy; solution treatment; mechanical properties; galvanic corrosion; degradation rate
资金
- Key Program of China on Biomedical Materials Research and Tissue and Organ Replacement [2016YFC1101804, 2016YFC1100604]
- Shenyang Key R & D and Technology Transfer Program [Z18-0-027]
Heat treatment is an effective method to reduce the degradation rate of biodegradable magnesium alloys, especially solution treatment. In this work, the effects of solution treatment on microstructure, mechanical properties and degradation behaviour of a Mg-2Zn-0.5Nd-0.5Zr alloy were investigated. The results showed that with increase of solution temperature, the grain size increased from 4-5 mu m for the untreated alloy to 25-30 mu m for the 550 degrees C treated alloy and the second phases were dissolved into the alloy matrix gradually. With increase of the temperature, both ultimate tensile strength and yield strength of the alloy were decreased, while the elongation was increased. The alloy after 500 degrees C solution treatment exhibited the lowest degradation rate and showed a uniform degradation process.
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