1 Guangdong Key Laboratory for Advanced Metallic Materials Processing, South China University of Technology, Guangzhou 510640, Guangdong, China 2 College of Engineering and Technology, Normal College of Zunyi, Zunyi 563006, Guizhou, China 3 Mechanical and Electrical Engineering College, Hainan University, Haikou 570228, Hainan, China
Corrosion behavior of a spark plasma sintered Fe�C20Mn�C11Al�C1.8C�C5Cr alloy in molten aluminum
1 Guangdong Key Laboratory for Advanced Metallic Materials Processing, South China University of Technology, Guangzhou 510640, Guangdong, China 2 College of Engineering and Technology, Normal College of Zunyi, Zunyi 563006, Guizhou, China 3 Mechanical and Electrical Engineering College, Hainan University, Haikou 570228, Hainan, China
ժҪ The corrosion behavior of an Fe�C20Mn�C11Al�C1.8C�C5Cr alloy prepared by spark plasma sintering was investigated via immersion tests in molten aluminum at 750 ��C for 1 and 4 h, respectively, and a hot work steel (AISI H13) was included as a reference. The experimental results show that the corrosion rate of Fe�C20Mn�C11Al�C1.8C�C5Cr alloy is ~ 24% of that of H13 steel, suggesting that Fe�C20Mn�C11Al�C1.8C�C5Cr alloy in molten aluminum possesses better corrosion resistance than H13 steel. Detailed analysis show that j-carbide ((Fe, Mn)3AlCx) and Cr7C3 carbide precipitated in the matrix play a key role in enhancing the corrosion resistance of Fe�C20Mn�C11Al�C1.8C�C5Cr alloy in molten aluminum. Both of them show better corrosion resistance than c-Fe matrix and H13 steel, and can also take on the role of roots in grasping the corrosion product and restrain them from spalling into the molten aluminum.
Abstract��The corrosion behavior of an Fe�C20Mn�C11Al�C1.8C�C5Cr alloy prepared by spark plasma sintering was investigated via immersion tests in molten aluminum at 750 ��C for 1 and 4 h, respectively, and a hot work steel (AISI H13) was included as a reference. The experimental results show that the corrosion rate of Fe�C20Mn�C11Al�C1.8C�C5Cr alloy is ~ 24% of that of H13 steel, suggesting that Fe�C20Mn�C11Al�C1.8C�C5Cr alloy in molten aluminum possesses better corrosion resistance than H13 steel. Detailed analysis show that j-carbide ((Fe, Mn)3AlCx) and Cr7C3 carbide precipitated in the matrix play a key role in enhancing the corrosion resistance of Fe�C20Mn�C11Al�C1.8C�C5Cr alloy in molten aluminum. Both of them show better corrosion resistance than c-Fe matrix and H13 steel, and can also take on the role of roots in grasping the corrosion product and restrain them from spalling into the molten aluminum.
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2018, Vol. 25 
