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本文对比了五种板块状铝中间合金细化剂(0.01％Ti、0.1％Ti、0.01％Ti+B、0.1％Ti+B、0.1％Ti+Zr),不同熔炼时间(0.5h和4h)对2124变形铝合金铸锭晶粒大小的影响,以及经不同变形后的试样表面及内部晶粒大小的影响。另外还对比了7050合金以锆盐和板块状Al-Zr中间合金形式加入或以板块状Al-Ti-B和以φ3mm丝状Al-Ti-B中间合金形式注入流槽对铸锭晶粒细化的效果。试验表明Al-Ti-B中间合金是高纯铝合金中一种最佳细化剂,它对细化铸锭和变形晶粒、克服铸锭开裂、改善铸锭压力加工性能,提高生产合格率都有突出的效果,并且减少了中间合金的用量,具有可观的经济效益。
In this paper, five kinds of plate-like aluminum alloy refiner (0.01% Ti, 0.1% Ti, 0.01% Ti + B, 0.1% Ti + B and 0.1% Ti + Zr) On 2124 deformed aluminum alloy ingot grain size, as well as through the different deformation of the sample surface and internal grain size. In addition, 7050 alloy was also compared with zirconium salt and plate-like Al-Zr master alloy or with slab-shaped Al-Ti-B and φ3mm filiform Al-Ti-B master alloy The effect of the Experiments show that Al-Ti-B master alloy is one of the best refiner in high-purity aluminum alloy. It can refine ingots and deformed grains, overcome cracking of ingot, improve pressure-working performance of ingot and increase production pass rate Have outstanding results, and reduce the amount of master alloy, with considerable economic benefits.