Hydrogen-induced Modification in the Deformation and Fracture of a Precipitation-hardened Fe-Ni Based Austenitic Alloy
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2014年第11期
论文作者：Mingjiu Zhao Zifeng Guo Shenghu Chen Hao Liang Lijian Rong
文章页码：1155 - 1159
摘 要：Hydrogen-induced modification in the deformation and fracture of a precipitation-hardened Fe e Ni based austenitic alloy has been investigated in the present study by means of thermal hydrogen charging experiment, tensile tests, scanning electron microscopy（SEM） and transmission electron microscopy（TEM）. It is found that the g0 particles are subjected to the multiple shearing by dislocations during plastic deformation,which promotes the occurrence of the dislocation planar slip. Moreover, the alloy will be enhanced by hydrogen resulting in the formation of strain localization at macroscale. So, the mechanisms of deformation and fracture in the alloy have been proposed in terms of serious hydrogen-induced planar slip at microscale which can lead to macroscopic strain localization.
Mingjiu Zhao1，Zifeng Guo2，Shenghu Chen1，Hao Liang3，Lijian Rong1
1. Institute of Metal Research,Chinese Academy of Sciences2. Shougang Research Institute of Technology,Shougang Group3. Institute of System Engineering,China Academy of Engineering and Physics
摘 要：Hydrogen-induced modification in the deformation and fracture of a precipitation-hardened Fe e Ni based austenitic alloy has been investigated in the present study by means of thermal hydrogen charging experiment, tensile tests, scanning electron microscopy（SEM） and transmission electron microscopy（TEM）. It is found that the g0 particles are subjected to the multiple shearing by dislocations during plastic deformation,which promotes the occurrence of the dislocation planar slip. Moreover, the alloy will be enhanced by hydrogen resulting in the formation of strain localization at macroscale. So, the mechanisms of deformation and fracture in the alloy have been proposed in terms of serious hydrogen-induced planar slip at microscale which can lead to macroscopic strain localization.
关键词：
