期刊
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
卷 24, 期 12, 页码 3872-3878出版社
ELSEVIER
DOI: 10.1016/S1003-6326(14)63545-7
关键词
aluminium alloy; Zr alloying; precipitation; corrosion; mechanical property
资金
- National Natural Science Foundation of China [51171108]
- Shanghai High-tech Development Project, China
Effects of Zr addition on the microstructure, mechanical and electrochemical properties of Al-Mn-Si-Zn alloy were investigated. Transmission electron microscopy (TEM) observations reveal that, in as-annealled state, the precipitates in the Zr-containing alloy are finer and more dispersive than those in the Zr-free alloy. Whereas, in simulated brazing state, a weaker precipitation is found in the Zr-containing alloy. Tensile testing results indicate that, with Zr additon, comprehensive mechanical properties of the as-annealed alloys could be significantly improved but weakened for the simulated brazing alloy. Electrochemical testing results reveal that, with Zr addition, the corrosion resistance of the as-annealed alloy decreases. However, after the simulated brazing treatment, such a negative effect of Zr element on the corrosion behavior of the alloy could be negligible.
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