过滤净化对铝青铜组织和性能的影响

Effect of filtration cleaning on structura and mechanical properties of high-manganese aluminium bronze

研究了高锰铝青铜ＺＱＡｌ２－８－３－２中夹杂物的种类和形态。其宏观夹杂物有： 三氧化二铝（α－Ａｌ２Ｏ３）；莫来石（３Ａｌ２Ｏ３·２ ＳｉＯ２）；铝尖晶石．微观夹杂物有： Ａｌ２Ｏ３；ＭｎＳ·ＦｅＳ：ＦｅＯ；ＭｎＯ．并用不同的过滤介质：刚玉球、高铝砖、焦宝石、烧 石等，对高锰铝青铜进行了过滤试验．结果表明：过滤对除去高锰铝青铜中的夹杂物 有明显效果，材料的疲劳性能可提高４１．３％，延伸率最好的可提高９．７％，抗拉强 度略有提高。

This paper investigates the inclusions in high-maganese aluminium bronze. Macroscopic inclusions are as follows: alundum, mullite, spinel. Microscopic inclusions are as follows; Al2O3, MnS·FeS, FeO·MnO. Different filtration mediums are used: corundum sphere, alumina brick, and high-manganese aluminium bronze is tested by filtration. The results show that filtration has an excellent effect on eliminating inclusions in the high-manganese aluminium bronze. Fatigue strength of material can be raised by 41.8% and elongation by 9.7%; while tensile strength can slightly be improved.