Effects of Vanadium and Rare-earth on Carbides and Properties of High Chromium Cast Iron
会议名称：《第五届国际材料与热加工物理模拟及数值模拟学术会议》
会议日期：2007年
学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 080201[工学-机械制造及其自动化]
关 键 词：High chromium cast iron Carbide Modification.
摘 要：The type, shape and distribution of carbide take directly effect on the mechanical properties of high chromium castings. Vanadium is able to stabilize the structure of carbide in high chromium cast iron,meanwhile the hardness of carbide containing vanadium can reaches about 2800HV. In some cases, vanadium can also refine the microstructure. Rare-earth is able to change the shape of carbide in cast iron, refine the grain size of ferrite and improve the mechanical properties of castings. In this experiment, intention of adding vanadium and rare-earth is modification of mechanical properties with the proper heat treatment technology. With the help of TEM and SEM, the characteristics of carbide, such as shape,distribution and quantity can be observed and mechanical properties has been improved for better wear-resistance.