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HA Kuan fu , WANG Xiuhua (Jilin University , Changchun. 130023. China Manuscript received 26 December. 1994)
金属学报(英文版)
Based on the crack tip structure a new model of ductile -brittle transition was proposed. Using this new model we calculated the dependence of the transition temperature-strain rate over a wide range of strain rate. Finally the significance of this new model is discussed in detail.
关键词: : fracture mechanics , null , null , null
WANG Yuming Institute of Materials Science , Jilin University , Changchun , 130023 , China
材料科学技术（英文）
关键词:
Physical Review B
The Wang-Landau algorithm is used to study the thermodynamic and magnetic properties of triangular spin-chain system based on two-dimensional Ising model in order to understand the magnetic-order dynamics in Ca(3)Co(2)O(6) compound. The calculated results demonstrate that the equilibrium state of the rigid spins produces the two-step magnetization curve at low temperature even when the random-exchange term is considered. This work indicates that the four-step magnetization behavior observed experimentally must be due to the nonequilibrium magnetization.
关键词: calcium compounds;exchange interactions (electron);Ising model;magnetisation;thermodynamics;one-dimensional ca3co2o6;density-of-states;compound ca3co2o6;phase-diagram;proteins;crystal
JIA Shizhen University of Science and Technology Beijing , China.
YAN Guangting Chongqing University , Sichuan , China.
稀有金属（英文版）
中国物理C
中国物理C doi:10.1088/1674-1137/40/1/017004
