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Corrosion resistance of 3D-printed and cold-rolled titanium alloys at 600 °C in air and air-SO2 environments
Materials Today Communications ( IF 3.8 ) Pub Date : 2020-03-05 , DOI: 10.1016/j.mtcomm.2020.101055
Zhiyuan Liang , Bin Tang , Yong Gui , Qinxin Zhao

The high-temperature corrosion of 3D-printed and cold-rolled Ti-6Al-4V at 600 °C under air and air-SO2 conditions was studied. Scanning electron microscopy, X-ray diffraction, and glow discharge optical emission spectroscopy were employed to characterize the corrosion products on investigated Ti-6Al-4V. Results showed that the weight gain of 3D-printed Ti-6Al-4V was significantly higher than that of cold-rolled Ti-6Al-4V. Sulfur species caused more attack than oxygen at 600 °C due to the permeability of sulfur species. The corrosion of 3D-printed Ti-6Al-4V was more serious than that of cold-rolled Ti-6Al-4V, which was attributed to the formation of α' phase during fast cooling of 3D-printed Ti-6Al-4V.



中文翻译:

3D打印和冷轧钛合金在600°C的空气和air-SO 2环境中的耐腐蚀性

研究了3D打印和冷轧Ti-6Al-4V在600°C下在空气和air-SO 2条件下的高温腐蚀。扫描电子显微镜,X射线衍射和辉光放电发射光谱被用来表征研究的Ti-6Al-4V上的腐蚀产物。结果表明,3D打印的Ti-6Al-4V的增重明显高于冷轧的Ti-6Al-4V。由于硫物质的渗透性,在600°C时,硫物质比氧气引起更多的侵蚀。3D打印的Ti-6Al-4V的腐蚀比冷轧的Ti-6Al-4V的腐蚀更严重,这归因于3D打印的Ti-6Al-4V的快速冷却过程中α'相的形成。

更新日期:2020-03-05
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