A study of microstructure and property of Fe-B-C alloy modified by Ti-Ce-Mg

作者：Li Xueyi^*; Fu Hanguang; Kuang Jiacai; Wang Jintao

来源：Optoelectronics and Advanced Materials-Rapid Communications, 2014, 8(7-8): 713-719.

• Fe-B-C alloy
• Ti-Ce-Mg compound modification
• Solidification microstructure
• Borocarbide
• Mechanical property
• Wear resistance

Effect of Ti-Ce-Mg compound modification on microstructures, mechanical property and wear resistance of cast Fe-B-C alloy containing 0.25%C, 1.80%B, 0.40%Si, 0.60%Mn and 0.80%Cr has been investigated by optical microscopy (OM), scanning electron microscopy (SEM), and X-ray diffraction (XRD) analysis, hardness test, impact test and wear test. The results indicate that the solidification microstructures of Fe-B-C alloy consist of Fe-2(B,C), Fe-3(C, B), pearlite, and ferrite. Fe-2(B, C) type borocarbide is continuously distributed over the grain boundary. After modification by Ti-Ce-Mg, solidification microstructures of Fe-B-C alloy are obviously refined and there are many obvious necking and broken net in borocarbides. The hardness of modified Fe-B-C alloy has no obvious change comparing with that of unmodified Fe-B-C alloy. Ti-Ce-Mg compound modification can considerably improve impact toughness and wear resistance of cast Fe-B-C alloy.

• 出版日期2014-8
• 单位中国计量科学研究院; 长沙理工大学; 山东科技大学; 北京工业大学