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HE Jianhong Huazhong University of Science and Technology , Wuhan , ChinaTANG Xiangyun CHEN Nanping Tsinghua University , Beijing , China Dept.of Materials Science and Engineering , Huazhong University of Science and Technology , Wuhan 430074 , China
金属学报(英文版)
The relation between grain size and strength of the duplex stainless steels and influence of grain size on properties of hydrogen induced cracking in these steels have been investigated. The Hall-Petch relation between grain size and strength of the steels is also followed.The susceptibility to hydrogen induced cracking of the steels increases with increasing grain size.
关键词: duplex stainless steel , null , null
ZHANG Guobin CHEN Changqi Beijing University of Aeronautics and Astronautics , Beijing , China Dept.of Materials Science and Engineering , Beijing University of Aeronautics and Astronautics , Beijing 100083 , China
The statistical model for the fracture toughness of a modified Al-7Si-0.45Mg cast alloy has been proposed on the basis of analysis of the correlation between the size distribution of crack nuclei and Si particles and of the micromechanism of fracture.The suitable criterion of frac- ture toughness according to the model has been given.The model has found a good explana- tion for the fracture feature,fracture toughness and microstructure,and agreed with the ex- periments very well.
关键词: cast Al alloy , null , null
