CAJ | 학술논문

针对吹气法制备泡沫金属过程中产生气泡稳定性不易判断问题，本文利用相场法理论，引入长程有序化参数作为场变量，描述并模拟泡沫铝和泡沫铝合金气泡演变过程中的结构尺寸的变化。通过模拟分析发现，相场法可以通过场变量简单明了的表征各种复杂的几何图形，包括气泡的几何形状、空间分布以及体积分数等，并且其模拟结果与实验观察结果具有良好的吻合性。
침대취기법제비포말금속과정중산생기포은정성불역판단문제，본문이용상장법이론，인입장정유서화삼수작위장변량，묘술병모의포말려화포말려합금기포연변과정중적결구척촌적변화。통과모의분석발현，상장법가이통과장변량간단명료적표정각충복잡적궤하도형，포괄기포적궤하형상、공간분포이급체적분수등，병차기모의결과여실험관찰결과구유량호적문합성。
To study the foam stability problem in the gas injection metal foaming process ,the change of the foam structure during the foam grow th progress of aluminum foams and Al alloy foam by gas injec-tion foaming was described and simulated by phase-field method with the long range order parameter as field variable .By the analysis of the simulation ,all kinds of complex geometrical figures ,including the foam geometrical figures ,the foam spatial distribution and the foam volume fraction and so on ,were clearly described through field variable ,and the result of simulation was in accord with the result of ex-perimental observations .