Microstructure and Mechanical Properties of Ductile Cast Iron in Lost Foam Casting with Vibration

作     者：Bo-tao XIAO Zi-tian FAN Wen-ming JIANG Xin-wang LIU Wei LONG Qiang HU 

作者机构：State Key Laboratory of Material Processing and Die & Mould TechnologyHuazhong University of Science and Technology School of Materials Science and EngineeringJiangxi Science and Technology Normal University School of Mechanical & Electrical EngineeringWuhan Institute of Technology Jiangxi Key Laboratory for Advanced Copper and Tungsten MaterialsJiangxi Academy of Sciences 

出 版 物：《Journal of Iron and Steel Research International》 (Journal of Iron and Steel Research, International)

年 卷 期：2014年第21卷第11期

页      面：1049-1054页

核心收录：

学科分类：080503[工学-材料加工工程] 0806[工学-冶金工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

基　　金：Item Sponsored by National High Technology Research and Development Program(863Program)of China(2007AA03Z113) 

主　　题：ductile cast iron (DI) microstructure mechanical property mechanical vibration lost foam casting (LFC) 

摘      要：The microstructures and mechanical properties of the ductile cast iron （DI） specimens obtained by lost foam casting （LFC） with and without vibration were investigated. The results indicate that the number of the graphite nodule increases from 175 mm 2 of the specimens produced by LFC without vibration to 334 mm^-2 of the specimens produced by LFC with vibration, and the thickness of the ferrite shell increases. Meanwhile, the amount of the carbides decreases in the specimens produced by LFC with vibration and the granule structure then forms. These are mainly attributed to the ＂crystal shower＂ caused by the vibration. In addition, the tensile strength and elongation of DI specimens produced by LFC with vibration are improved due to the dispersion-strengthening of refined carbide and Dearlite colonv, uniform distribution of the graphite nodule, and increase of the amount of dimples and tearing edges.