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采用元素直接合成法,以工业纯铝、钛屑及石墨颗粒为原料制备Al-Ti-C中间合金,研究和评价了Al-Ti-C中间合金的显微组织及其对4032铝合金铸态组织和活塞模锻件组织的影响。结果表明,制备的Al-Ti-C中间合金由Al基体、长条状Al3Ti相和细小粒状TiC相,以及少量的游离C组成。将其应用于4032铝合金中,起到了明显的铸态晶粒细化效果。用该合金制备的活塞模锻件,显微组织和性能优良。
Al-Ti-C master alloy was prepared by direct elemental synthesis method using industrial pure aluminum, titanium flake and graphite particles as raw materials. The microstructure of Al-Ti-C master alloy was studied and evaluated. Effects of Tissue and Piston Forgings. The results show that the prepared Al-Ti-C master alloy consists of Al matrix, elongated Al3Ti phase, fine granular TiC phase and a small amount of free C. Its application in 4032 aluminum alloy, played a significant cast grain refinement effect. Piston die forgings made from this alloy have excellent microstructure and properties.