Corrosion behavior of a spark plasma sintered Fe-2OMn-11Al-1.8C- 5Cr alloy in molten aluminum  

作　　者：Jian Liu Wei-ping Chen Xian-man Zhang Zhi-qiang Fu 

机构地区：[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 ofZunyi, Zunyi 563006, Guizhou, China [3]Mechanical and Electrical Engineering College, Hainan University, Haikou 570228, Hainan, China

出　　处：《Journal of Iron and Steel Research International》2018年第5期563-571,共9页

基　　金：This research was funded by National Natural Science Foundation of China （51271080） and Opening Project of Guangdong Key Laboratory for Advanced Metallic Materials Processing （South China University of Technology） （Grant No. G J201609）.

摘　　要：The corrosion behavior of an Fe-20Mn-11Al-1.8C-5Cr alloy prepared by spark plasma sintering was investigated via immersion tests in molten aluminum at 750℃ for 1 and 4 h, respectively, and a hot work steel （AlSI H13） was included as a reference. The experimental results show that the corrosion rate of Fe-20Mn-11Al-1.8C-5Cr alloy is - 24% of that of H13 steel, suggesting that Fe-20Mn-11Al-1.8C-5Cr alloy in molten aluminum possesses better corrosion resistance than H13 steel. Detailed analysis show that k-carbide （（Fe, Mn）3AlCx） and Cr7C3 carbide precipitated in the matrix play a key role in enhancing the corrosion resistance of Fe-20Mn-11Al-1.8C-5Cr alloy in molten aluminum. Both of them show better corrosion resistance than 7-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.The corrosion behavior of an Fe-20Mn-11Al-1.8C-5Cr alloy prepared by spark plasma sintering was investigated via immersion tests in molten aluminum at 750℃ for 1 and 4 h, respectively, and a hot work steel （AlSI H13） was included as a reference. The experimental results show that the corrosion rate of Fe-20Mn-11Al-1.8C-5Cr alloy is - 24% of that of H13 steel, suggesting that Fe-20Mn-11Al-1.8C-5Cr alloy in molten aluminum possesses better corrosion resistance than H13 steel. Detailed analysis show that k-carbide （（Fe, Mn）3AlCx） and Cr7C3 carbide precipitated in the matrix play a key role in enhancing the corrosion resistance of Fe-20Mn-11Al-1.8C-5Cr alloy in molten aluminum. Both of them show better corrosion resistance than 7-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.

关 键 词：Fe-Mn-Al-C-Cr alloy · Molten aluminum. Immersion · Corrosion behavior 

分 类 号：TG131[一般工业技术—材料科学与工程]