Low Temperature Impact Toughness and Fracture Analysis of EN-GJS-400-18-LT Ductile Iron under Instrumented Impact Load

作     者：Xin-ning ZHANG Ying-dong QU Rong-de LI 

作者机构：School of Materials Science and EngineeringShenyang University of Technology 

出 版 物：《Journal of Iron and Steel Research International》 (国际钢铁研究杂志)

年 卷 期：2015年第22卷第9期

页      面：864-869页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

主　　题：graphite nodule ductile to brittle transition cleavage fracture deformation twin three dimensional reconstruction 

摘      要：The impact toughness of EN-GJS-400-18-LT ductile iron was measured by Charpy V-notch impact test at temperature between-80 and 20℃.The fracture properties were tested under instrumented impact *** impact fracture energy,crack initiation and propagation energy,dynamic loads and the ductile to brittle temperature were ***-dimensional reconstruction of impact fracture morphology was accomplished by confocal laser scanning *** results of quantitative fractography indicate that cleavage fracture produces flatter fracture surfaces accompanying with less absorbed energy during the impact fracture *** indicates that fracture roughness has a close relationship with crack propagation energy at low temperature.