Effects of Fe concentration on microstructure and corrosion of Mg-6Al-1Zn-xFe alloys for fracturing balls applications |
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| Affiliation: | 1. College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China;2. National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing 400044, China;3. School of Metallurgy and Materials Engineering, Chongqing University of Science and Technology, Chongqing 401331, China;4. College of Information Science and Engineering, Jiaxing University, Jiaxing 314001, China;5. Chongqing Academy of Science and Technology, Chongqing 401123, China |
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| Abstract: | Mg-6Al-1Zn-xFe (x = 0, 1, 3, 5 and 7 wt%) alloys were prepared by powder metallurgy and followed by hot extrusion. Majority of Fe element exists as insoluble particles in the alloys. The as-extruded alloys showed higher degradable rates but less stable mechanical properties than as-annealed alloys. Corrosion rate of all the alloys increased with increasing Fe concentration, reaching 2.4 mL cm−2 h-1. 0.2% yield strength of all the alloys was higher than 150 MPa. In short, Mg-6Al-1Zn-xFe alloys have an attractive combination of corrosion and mechanical properties, which holds a bright future for fracturing balls applications. |
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| Keywords: | Mg-6Al-1Zn-xFe alloys Fracturing balls Corrosion Mechanical properties |
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