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首页> 外文期刊>Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing >The relation between microstructure and corrosion behavior of GTA welded AZ31B magnesium sheet
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The relation between microstructure and corrosion behavior of GTA welded AZ31B magnesium sheet

机译：GTA焊接AZ31B镁薄板组织与腐蚀行为的关系。

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摘要

Welding of AZ31B magnesium alloy was carried out using gas-tungsten arc (GTA) welding. The microstructure and the corrosion behavior of welded magnesium AZ31B alloy were investigated. ac and dc polarization tests were carried out on the welded Mg sheet. The microstructure was examined using optical and electron microscopy (TEM and SEM), X-ray analysis and EDS. Scanning Kelvin probe force microscopy (SKPFM) was used in order to measure the Volta potential of different phases relative to the matrix. The results showed that the GTA process effected both the microstructure and the corrosion behavior. These results can be explained by the effects of the process on microstructure of AZ31B Mg alloy sheet such as grain size and precipitates caused by the change in precipitation and recrystallization behavior.
机译：AZ31B镁合金的焊接使用钨极氩弧焊（GTA）进行。研究了焊接镁AZ31B合金的显微组织和腐蚀行为。在焊接的镁板上进行了交流和直流极化测试。使用光学和电子显微镜（TEM和SEM），X射线分析和EDS检查微观结构。使用扫描开尔文探针力显微镜（SKPFM）来测量相对于基质的不同相的Volta电位。结果表明，GTA工艺对组织和腐蚀行为都有影响。这些结果可以通过该工艺对AZ31B Mg合金薄板的微观结构的影响来解释，例如晶粒尺寸和沉淀和再结晶行为的变化所引起的沉淀。

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