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First~principles verification of grain refinement mechanism of a~ luminum and aluminum alloys. Master' s Thesisꎬ Yanshan Universityꎬ Chinaꎬ2016( in Chinese) . 丁彦红.铝和铝合金晶粒细化机制的第一性原理验证.硕士学位论文ꎬ 燕山大学ꎬ2016. 39 Chumacher Pꎬ Greer A L. Materials ...