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], boundary element method [17,18] and artificial neural network method [19], etc. Many studies have been performed to calculate the SSHTC and investigate the factors affecting the SSHTC. XIAO et al [20... temperature field of the modified Jominy specimen before quenching, which is a uniform temperature field with the solution treatment temperature. The heat transfer boundary condition describes the mode of heat......
with different parameters of a and b 2.3 Boundary conditions 2.3.1 Outer boundary condition There are three kinds of outer boundary conditions: 1) The outer boundary pressure is known, where G is the boundary: 2) The outer boundary flow rate is known: 3) Mixed boundary condition: 2.3.2 Inner boundary condition There are two kinds of inner boundary conditions: 1) Fixed flow rate condition, where......
retrogression kinetics for grain boundary precipitate of 7A55 aluminum alloy[J]. Trans Nonferrous Met Soc China, 2014, 24(7): 2122-2129 [17] Li S Y, Kalidindi S R, Beyerlein I J. A crystal plasticity finite...]. Materials Science and Engineering A, 2015, 644: 358-364. [124] GUO Xiao-bin, DENG Yun-lai, ZHANG Jin, ZHANG Xin-ming. Effect of grain boundary on the precipitation behavior and hardness of Al-Cu-Mg alloy......
相(见图8(c)). 图8 不同Cu,Li含量Al-xCu-yLi-0.4Mg-0.35Mn-0.12Zr合金T6峰时效时晶界区域扫描透射电子显微镜(STEM)照片[33] Fig. 8 STEM images of grain boundary area in T6 peak-aged Al-xCu-yLi-0.4Mg-0.35Mn-0.12Zr alloys...能导致其强度降低,如表5所示. 图18 HAADF-STEM照片及晶界析出相元素面扫描照片 Fig. 18 HAADF-STEM images and scanning element analysis mapping of grain boundary precipitates 表5 微量稀土对Al-Cu-Li系铝锂合金强度的影响 Table 5  ......
phase can be observed in the grain boundaries, which is not dissolved sufficiently during solution treatment, as shown in Fig. 1(a). With the addition of Sr, except for the equiaxed α-Mg grains, the discontinuous second phase is observed in the grain boundaries and increases with increasing Sr addition. It is known that the maximal solubility of Sr in Mg is only about 0.11%. The addition of Sr......
low ductility at ambient temperature [1-3]. Researches have proved that the ductility of Mg alloys can be substantially improved by grain size reduction and texture softening [4-6]. For instance... CRSSs for several slip systems to operate simultaneously. Therefore, it is assumed in this model that merely a slip or twinning mode can be activated within an individual grain during a loading......
and width of FEM model are 30a and 20a. To improve the accuracy of calculation, meshes under contact region are refined and the total number of FEM meshes is 73 000, as shown in Fig.3(c). Boundary BC... Parameters of multilayer coating FEM model 3.2 Testing of FEM model In order to check the accuracy of boundary conditions and the finite element meshes used in the present model, the FEM results......
]. The oscillating flow in regenerator could be reduced to the compression and expansion of working gaseous in the holes of matrix of regenerator. According to the thermodynamics analysis on the boundary layers... with the dissipation in the boundary layer. Two experimental investigations have been developed on complex compliance about different kinds of matrix coupled with different TAR systems for its important role......
the deformation process in stability analysis of earth structures such as slope, foundation bearing capacity and earth pressure of retaining walls, and it is suitable for any complex boundary... saturation, the boundary condition is set as follows. The groundwater level is located at the top of the grid, and the pore pressure is fixed to be zero at grid points along the top of the grid......
and boundary conditions are given, we can simulate the system. In the following, we will simulate the system under the special initial values and boundary conditions. 2.3 Numerical simulation of R-T... gravitational acceleration is G; is kept constant and χ is proportional to ρ; for the left boundary, the right boundary and the upper boundary are all solid boundary, the bottom boundary is free......