材料期刊网

Microdeformation Behaviour of a Ferritic-Austenitic Duplex Stainless Steel

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）

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

Laser Modification of Plasma Sprayed Alumina Coating

TAO Zengyi WANG Aihua ZHU Beidi DENG Shijun CHENG Xudong FU Jiangmin Huazhong University of Science and Technology Wuhan , 430074 , ChinaWuhan Research Institute of Material Protection , Wuhan , 430000 , China

材料科学技术（英）

An alumina coating was developed on mild carbon steel by plasma spraying and then modified by laser remelting.Some characteristics of plasma sprayed ceramic coating before and after laser remelting,such as microstructure,wear resistance, heat shock resistance,hot corrosion property and bond strength,have been investigated in this paper.

关键词: plasma spraying , null , null

Influence of Ca/S and Rolling Reduction on Shape of Sulphide in Free-cutting Steel 5NiSCa

JIANG Laizhu CUI Kun ** Huazhong University of Science and Technology , Wuhan , 430074 , China. To whom correspondence should be addressed.

材料科学技术（英）

关键词: free-cutting steel , null

Influence of Hydrogen on Dislocation Structure in a Duplex Stainless Steel

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.

材料科学技术（英）

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