Microstructure and Mechanical Properties of Electron Beam Welded Alloy J75
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2014年第5期
论文作者：Shenghu Chen Mingjiu Zhao Hao Liang Lijian Rong
文章页码：493 - 498
摘 要：Microstructure and mechanical properties of electron beam welded alloy J75 were studied under as-welded and post-weld aging treatment（PWAT）conditions.The results showed that high-quality welds were produced by electron beam welding.Under as-welded condition,a fine dendritic structure consisting of gamma dendrite matrix and Laves phase was observed in the welds.Better mechanical properties were obtained in the weld zone than that of base metal because of the fine size of the dendritic structure.After PWAT,a discontinuous distribution ofγ’particles existed in the dendritic structure.The presence of aγ’depletion zone in the dendrite core resulted in a significant degradation of mechanical properties of the weld.
Shenghu Chen1，Mingjiu Zhao1，Hao Liang2，Lijian Rong1
1. Institute of Metal Research,Chinese Academy of Sciences2. Institute of System Engineering,China Academy of Engineering and Physics
摘 要：Microstructure and mechanical properties of electron beam welded alloy J75 were studied under as-welded and post-weld aging treatment（PWAT）conditions.The results showed that high-quality welds were produced by electron beam welding.Under as-welded condition,a fine dendritic structure consisting of gamma dendrite matrix and Laves phase was observed in the welds.Better mechanical properties were obtained in the weld zone than that of base metal because of the fine size of the dendritic structure.After PWAT,a discontinuous distribution ofγ’particles existed in the dendritic structure.The presence of aγ’depletion zone in the dendrite core resulted in a significant degradation of mechanical properties of the weld.
关键词：
