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HE Jianhong TANG Xiangyun CHEN Nanping Department of Materials Science and Engineering Huazhong University of Science and Technology Wuhan , 430074 , China.Department of Materials Science and Engineering Qinghua University , Beijing , 100084 , China.
材料科学技术（英文）
Microdeformation of ferritic and austenitic grains in a ferritic-austenitic duplex stainless steel have been observed in-situ by SEM with photoetch. The plastic deformation behaviour of austenitic grains are similar to ferritic grains for hydrogen uncharged specimens,it follows Mileiko's strain-equal model.But it will be changed when the specimens are hydrogen charged.
关键词: microdeformation , null , null
HE Jianhong TANG Xiangyun Department of Materials Science and Engineering Huazhong University of Science and Technology Wuhan , 430074 , China.Department of Materials Science and Engineering Qinghua University , Beijing , 100084 , China.
The dislocation structure of specimens of a duplex stainless steel with precharged hydrogen has been investigated by transmission electron microscopy.The result showed the hydrogen acti- vated dislocation source on phase boundaries of ferrite/austenite and makes certain dislocations in austenite grains move.The dislocation appearances in each phase in specimens uncharged with hydrogen have been given for comparison.
关键词: duplex stainless steel , null , null
