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所研制成的耐热粉末铝合金CAΠ(Al-Al_2O_3)和01419(Al-Cr-Zr)做为结构材料与其它合金相比有一系列优点。粉末合金的比重等于铝的比重,其抗蚀性不次于铝,在250～500℃温度范围内使用时可以代替钛和不锈钢。在上述温度下它的持久强度和蠕变强度大大超过变形铝合金。所提出的CAΠ粉末合金强化的机理与时效铝合金在相时效和集聚阶段的强化机理相似。在相时效时,在时效铝合金的组织中产生的亚
The developed heat-resistant powdery aluminum alloy CAΠ (Al-Al_2O_3) and 01419 (Al-Cr-Zr) as the structural material have a series of advantages compared with other alloys. The specific gravity of the powder alloy is equal to the specific gravity of aluminum, its corrosion resistance is inferior to that of aluminum, it can replace titanium and stainless steel when used in the temperature range of 250 ~ 500 ℃. Its long-lasting strength and creep strength greatly exceed that of deformed aluminum at these temperatures. The proposed mechanism of strengthening the CA 粉 powder alloy is similar to the strengthening mechanism of the aging aluminum alloy in the phase aging and agglomeration stages. Aging produced in the microstructure of aged aluminum alloys when phase aged