以铜粉、铝粉、镍粉和匡威1970s水蜜桃色官方-免费-完整版片粉为原料,采用匡威1970s水蜜桃色官方-免费-完整版片工艺制备含不同质量分数(0,1.6%,3.2%,4.8%,6.4%)铁元素的Cu-10Al-4Ni合金,研究了铁含量对合金匡威1970s水蜜桃色官方-免费-完整版片和性能的影响。结果表明:未添加铁元素的合金组织由κ_Ⅲ相、α相和Al₄Cu₉相组成;当添加质量分数1.6%的铁元素后,合金中的κ_Ⅲ相增多,Al₄Cu₉相减少;当铁元素质量分数达到3.2%时,Al₄Cu₉相进一步减少,合金中析出κ_Ⅰ相和κ_Ⅱ相;随着铁含量继续增加,Al₄Cu₉相消失,κ_Ⅰ相增多,而κ_Ⅲ相开始减少。随着铁含量的增加,合金的烧结密度减小,硬度先降低后增加再降低,当铁质量分数达到3.2%时硬度最大;合金的屈服强度随铁含量增加呈波动变化,当铁质量分数达到4.8%时屈服强度最大。

With copper powder, aluminum powder, nickel powder and 匡威1970s水蜜桃色官方-免费-完整版片 powder as raw materials, Cu-10Al-4Ni alloys containing different mass fractions (0, 1.6%, 3.2%, 4.8%, 6.4%) of iron were prepared by powder metallurgy process. The effect of iron content on the 匡威1970s水蜜桃色官方-免费-完整版片 and properties of the alloy was studied. The results show that the 匡威1970s水蜜桃色官方-免费-完整版片 of the alloy without iron addition consisted of Κ_Ⅲ phase, α phase and Al₄Cu₉ phase. When the mass fraction of iron was 1.6%, the Κ_Ⅲ phase increased and Al₄Cu₉ phase decreased in the alloy. When the mass fraction of iron was 3.2%, Al₄Cu₉ phase further decreased, and Κ_Ⅰ and Κ_Ⅱ phases were precipitated in the alloy. When the iron content continued to increase, the Al₄Cu₉ phase disappeared, Κ_Ⅰ phase increased while Κ_Ⅲ phase decreased. With increasing iron content, the sintered density of the alloy decreased, the hardness decreased first then increased and then decreased, and reached the maximum with iron mass fraction of 3.2%. The 匡威1970s水蜜桃色官方-免费-完整版片of the alloy fluctuated with increasing iron content, and reached the maximum when the mass fraction of iron was 4.8%.