合金基体晶粒的细化是提高机械性能,改善铸造性能的重要方法,这对固溶体型合金尤为重要。细化元素的加入,过去一般采用中间合金的形式,其操作虽方便较但先要配制中间合金,增加了能源消耗,经济效益低。更突出的问题首先是中间合金中细化元素含量对细化效果并不起决定作用,起决定作用的是相质点大小,形状,分布特点及相的 The grain refinement of the alloy matrix is ​​an important method to improve the mechanical properties and improve the casting performance, which is especially important for solid solution type alloys. The refinement of the elements to join the past, the general form of the master alloy, the operation is convenient, but the first preparation of master alloys, an increase of energy consumption, low economic benefits. The more prominent problem is that the content of refined elements in the intermediate alloy is not decisive for the refining effect. The decisive factor is the size, shape, distribution and phase of the phase particles