Dissertation > Industrial Technology > General industrial technology > Materials science and engineering > Special structural materials

A Thesis Submitted To Shanghai Jiao Tong University for Master Degree

Author ShenZhiQiang
Tutor ShenYao
School Shanghai Jiaotong University
Course Materials Science
Keywords Nano - metal multilayers Micro - structure of the thermal stability of Microstructure evolution Proliferation Simulation
CLC TB383.1
Type Master's thesis
Year 2009
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The first microstructure evolution caused by the proliferation of immiscible nano metal multilayers simulation anisotropic multilayers higher temperature microstructure evolution model . In this model , we first propose a stepped stacking configuration of the multilayer film , and different from the traditional model ( such as the model proposed by Anderson PM , et al , Suo Z et al proposed model ) in the multilayer film interface , trigeminal point movement approach . At our disposal , trigeminal point of the exercise on the interfacial tension and the torsional force of forces acting on the driver. In the numerical simulation of the model , we propose a new numerical method ( five-point quartic polynomial method) to simulate the microstructure evolution . Using the model to study a different aspect ratio , and the structure and the layer of the thermal stability of the grain boundary phase boundary energy than a multilayer film detachment phenomenon Meanwhile, we also studied the impact of the different stacking configuration for the thermal stability of the multilayer film . Finally, we also compared the Anderson PM model and our model comparison results show that : our simple model , computing faster , flexible , applicable to a wider , and has a stronger predictor of function . The paper also studied the simulation of miscible micro- structure of the thermal stability of the multilayer film , focus on a coherent stress diffusion in multilayers , CPC cell stress diffusion control method of the multilayer films Algorithm the next stage of the research work presented concrete ideas , proposed the study design achieve NANOMULTILAYERS stable structure and prepared the way of this goal .

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