中间合金含有准确数量的合金元素,如硅、锶或其它元素加到铝中,具有冶金和经济上的优点,如管理简单、损耗减少、熔点低。通常,杂质会产生问题,因而优先采用高纯铝。晶粒细化剂关于晶粒细化剂,有两种不同的中间合金,即铝-钛和铝-钛-硼。也可以使用各种盐,但可能带来一些问题,因为碱土元素可能与盐起反应而改变其性能。而且盐类是吸 The master alloy contains the exact amount of alloying elements, such as silicon, strontium or other elements added to the aluminum, with metallurgical and economic advantages such as simple management, reduced loss and low melting point. In general, impurities cause problems, so high purity aluminum is preferred. Grain refiners For grain refiners, there are two different master alloys, aluminum-titanium and aluminum-titanium-boron. Various salts can also be used, but may pose some problems because alkaline earth elements may react with salts to alter their properties. And salt is sucked