- （会E）Effect of Heat Treatment on the Corrosion Resistance of Cast Mg-7.3Al Alloy
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- 所属单位：材料科学工程学院
- 教研室：材料科学工程学院
- 发表刊物：Advanced Materials Research
- 项目来源：省、市、自治区科技项目
- 关键字：magnesium alloy ;heat treatment; corrosion resistance
- 摘要：Mg-7.3Al magnesium alloys were investigated in the paper. The paper presents microstructural characterization of Mg-7.3Al alloy after casting and heat treatment. The casting temperature was 740°C and heat treatment was performed at 420 °C for 24 h with aging at 180 °C for 8h,16h,24h. The microstructure of the casting alloy consists of α-Mg phase matrix with a primary β phase (Mg17Al12) at grain boundaries. After solution treatment β phases were soluted in α-Mg phase matrix . Aging treatment caused β phases precipitation. The corrosion resistance of magnesium alloy was determined in 3.5 % NaCl by immersion tests and polarization curves. The results shows that the corrosion resistance of magnesium alloy after solution treat is the best than that of the others heat treatment in polarization curve tests and the samples with aging for 16h and 24h presents higher corrosion resistance than those with solution and aging for 8h in immersion tests. Solution treatment plays a main role for corrosion resistance of Mg-7.3Al magnesium alloy in short term corrosion, but more continuous β phases in Mg-7.3Al alloy after ageing act as a barrier and play a main role in long term corrosion.
- 第一作者：贾素秋
- 论文类型：期刊论文
- 卷号：146-147
- 页面范围：1
- ISSN号：1022-6680
- 是否译文：否
- 发表时间：2011-02-01
