The mechanism of grain refinement during cast-rolling process with ultrasonic treatment is discussed, and the presented problems are pointed out.
探讨超声波空化现象及声流作用对铸轧铝板带组织细化作用的机制。指出目前超声波铝铸轧过程中存在的问题。
The present situation of development and application of master alloy refiners and mechanism of grain refinement in aluminum alloys was analyzed and discussed.
分析讨论了中间合金对铝合金晶粒细化处理的研究与应用现状及其细化机理；
The results indicate that niobium compounds form during solidification, leading to the refinement of austenite grains. The mechanism of grain refinement has been investigated extensively.
铌化物是在凝固过程中形成，具有细化奥氏体晶粒的作用，并分析研究了铌细化高锰钢奥氏体晶粒的机制。
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