排序方式: 共有36条查询结果,搜索用时 0 毫秒
31.
S. V. Bykova V. D. Golyshev M. A. Gonik V. B. Tsvetovsky T. Duffar M. P. Marchenko I. V. Frjazinov 《Crystallography Reports》2004,49(2):312-317
The possibility of growing macrohomogeneous Ga1 ? xInxSb crystals with x = 0.2 was studied using the axial heating process close to the melt/crystal interface. The grown ingots were analyzed by a JSM-5300 scanning electron microscope and the experimental results were compared with the results of numerical simulation. It was shown that, as a whole, the mathematical model adequately describes the processes of the steady-state heat and mass transfer. It was found that, at the crystallization of Ga1 ? xInxSb by the axial heating process under conditions of weak laminar flows, longitudinal homogeneity is observed when a dead zone is formed in the melt and that the crystallization regime is similar to diffusion. It was shown that the composition of the grown crystals strongly depends on the structure of a melt flow and its dynamics. 相似文献
32.
33.
Physics of the Solid State - We determined the spall strength of hafnium heated by a loading shock wave to thousands of degrees and subjected to transformations into denser polymorphic... 相似文献
34.
35.
A. M. Molodets A. A. Golyshev A. S. Savinykh V. V. Kim 《Journal of Experimental and Theoretical Physics》2016,122(2):289-297
The physico-mechanical properties of amorphous glassy carbon are investigated under shock compression up to 10 GPa. Experiments are carried out on the continuous recording of the mass velocity of compression pulses propagating in glassy carbon samples with initial densities of 1.502(5) g/cm3 and 1.55(2) g/cm3. It is shown that, in both cases, a compression wave in glassy carbon contains a leading precursor with amplitude of 0.135(5) GPa. It is established that, in the range of pressures up to 2 GPa, a shock discontinuity in glassy carbon is transformed into a broadened compression wave, and shock waves are formed in the release wave, which generally means the anomalous compressibility of the material in both the compression and release waves. It is shown that, at pressure higher than 3 GPa, anomalous behavior turns into normal behavior, accompanied by the formation of a shock compression wave. In the investigated area of pressure, possible structural changes in glassy carbon under shock compression have a reversible character. A physico-mechanical model of glassy carbon is proposed that involves the equation of state and a constitutive relation for Poisson’s ratio and allows the numerical simulation of physico-mechanical and thermophysical properties of glassy carbon of different densities in the region of its anomalous compressibility. 相似文献
36.
Fomin V. M. Brusentseva T. A. Golyshev A. A. Malilkov A. G. Mishin A. V. Orishich A. M. Filippov A. A. 《Journal of Applied Mechanics and Technical Physics》2021,62(5):752-759
Journal of Applied Mechanics and Technical Physics - Results of theoretical and experimental investigations of physical and mechanical properties of a heterogeneous material based on the TiB... 相似文献