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采用合金化方法制备了三种不同成分的室内装饰用Al-Zn-Si合金,即Al-76.7Zn-0.2Si合金(1#),Al-60.9Zn-2.1Si合金(2#),Al-40.9Zn-6.2Si合金(3#),研究了Zn和Si元素含量对合金物相、组织、力学性能和耐腐蚀性能的影响,并分析了元素在合金中的存在形式。结果表明,1#合金中主要物相为α-Al和η-Zn相;2#和3#合金中除α-Al和η-Zn相外,还出现了单质Si相;Si含量越高、Zn含量越低,则合金的铺展面积越大,润湿性能越好;随着铺展温度的升高,三种不同组分的Al-Zn-Si合金的铺展面积呈现逐渐增大的趋势,而润湿角都表现为逐渐降低的趋势。在同一铺展温度下,润湿角从小至大的顺序为:1#<2#<3#;不同成分的抗拉强度从低至高依次为:1#<2#<3#,而断后伸长率从高至低的顺序为:1#>2#>3#;耐腐蚀性能从高至低的顺序为:3#>2#>1#。
Al-76.7Zn-0.2Si alloy (1 #), Al-60.9Zn-2.1Si alloy (2 #), Al- 40.9Zn-6.2Si alloy (3 #). The effects of Zn and Si contents on the phase, microstructure, mechanical properties and corrosion resistance of the alloy were investigated. The existing forms of the elements in the alloy were also analyzed. The results show that the major phase of alloy # 1 is α-Al and η-Zn phase. In addition to α-Al and η-Zn phase, The lower the Zn content is, the larger the spreading area of the alloy is and the better the wetting property is. With the increase of the spreading temperature, the spreading area of Al-Zn-Si alloys with three different compositions gradually increases, Wetting angle showed a trend of decreasing gradually. In the same spreading temperature, the order of wetting angle from small to large is: 1 # <2 # <3 #; the tensile strength of different components from low to high are as follows: 1 # <2 # <3 # The order from high to low is: 1 #> 2 #> 3 #; the order of corrosion resistance from high to low is: 3 #> 2 #> 1 #.