Corrosion Behavior and Hardness of Al-M （M:Mo,Si,Ti,Cr） Alloys
来源期刊：Acta Metallurgica Sinica2017年第4期
论文作者：J.Esquivel R.K.Gupta
文章页码：333 - 341
摘 要：The corrosion behavior of Al-5 at.%Cr,Al-5 at.%Si,Al-5 at.%Mo and Al-5 at.%Ti produced via casting and Al-5 at.%Cr produced by high-energy ball milling and subsequent consolidation by cold pressing was studied using potentiodynamic polarization and surface analysis following constant immersion tests.Alloys were characterized using a scanning electron microscope coupled with the energy-dispersive X-ray spectroscopy and X-ray diffraction analysis.Hardness,a representative of the strength,was also measured.The alloys produced by casting contained coarse intermetallics and therefore exhibited poor corrosion resistance.Al-5 at.%Cr alloy produced by high-energy ball milling exhibited a significantly improved corrosion resistance and hardness,which was attributed to the grain refinement to nanoscale and extended solid solubility of Cr in Al.The study indicated that the high-energy ball milling was capable of producing Al alloys with improved corrosion behavior and hardness.
J.Esquivel，R.K.Gupta
Department of Chemical and Biomolecular Engineering,The University of Akron
摘 要：The corrosion behavior of Al-5 at.%Cr,Al-5 at.%Si,Al-5 at.%Mo and Al-5 at.%Ti produced via casting and Al-5 at.%Cr produced by high-energy ball milling and subsequent consolidation by cold pressing was studied using potentiodynamic polarization and surface analysis following constant immersion tests.Alloys were characterized using a scanning electron microscope coupled with the energy-dispersive X-ray spectroscopy and X-ray diffraction analysis.Hardness,a representative of the strength,was also measured.The alloys produced by casting contained coarse intermetallics and therefore exhibited poor corrosion resistance.Al-5 at.%Cr alloy produced by high-energy ball milling exhibited a significantly improved corrosion resistance and hardness,which was attributed to the grain refinement to nanoscale and extended solid solubility of Cr in Al.The study indicated that the high-energy ball milling was capable of producing Al alloys with improved corrosion behavior and hardness.
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