科研之友
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摘要
The microstructures and properties of fresh, artificial aged and natural aged flux cored ZnAl15 wires were investigated by scanning electron microscope (SEM) and energy dispersive X-ray (EDX) spectrometer techniques. The results of SEM showed that continuous precipitation of eta(s) phase occurred and the dissolved contents of both alpha(s) phase and eta(s) phase reduced during the aging process of ZnAl15 wire, which led to the increase in Vickers microhardness. The results of the EDX presented that the oxygen absorption corrosion led to the embrittlement of ZnAl15 wire, which decreased the number of reverse bends. In addition, the phase transformation stress accelerated the corrosion, and finally, the natural aged ZnAl15 wire resulted in stress corrosion crack under the comprehensive effects of corrosion and phase transformation stress.
- 出版日期2013-8
- 单位郑州机械研究所; 郑州大学
