| 引用本文: | 赵晓隆,郝晓博,杨杰.{1012}孪晶对AZ31镁合金腐蚀性能的影响[J].材料科学与工艺,2025,33(4):72-80.DOI:10.11951/j.issn.1005-0299.20230361. |
| ZHAO Xiaolong,HAO Xiaobo,YANG Jie.Effect of {1012} twins on corrosion properties of AZ31 magnesium alloy[J].Materials Science and Technology,2025,33(4):72-80.DOI:10.11951/j.issn.1005-0299.20230361. |
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| 摘要: |
| 镁及其合金因具有质轻、高强和良好阻尼性能等优点,被广泛应用于航空航天、交通和消费电子领域。但镁及其合金的高化学活性使其易在潮湿环境下发生腐蚀,增加服役失效风险,极大限制了镁及其合金的工业应用。大量的研究表明,晶粒尺寸对镁合金的耐蚀性有重要的影响。本文通过预压缩变形在AZ31镁合金中引入大量{101-0.1mm]2}孪晶界面,以细化镁合金的初始组织,探究由孪晶界面的引入带来的细晶效应与AZ31镁合金耐蚀性之间的关联。结果表明:随变形量增加,AZ31镁合金中孪晶体积分数逐渐提高,晶粒尺寸先减小后增大,同时初始{0001}织构逐渐转变为{101[KG-0.1mm]0}和{101[KG-0.1mm]2}织构,AZ31镁合金轧制面的耐蚀性能随着预变形量的增加而逐渐降低。分析表明,{101-0.1mm]2}孪晶导致的镁合金耐蚀性能的降低与孪晶诱导织构的改变有关。相较于晶粒尺寸,晶体取向的改变对AZ31镁合金的腐蚀性能影响更为显著。 |
| 关键词: AZ31镁合金 孪晶 变形量 腐蚀性能 织构 |
| DOI：10.11951/j.issn.1005-0299.20230361 |
| 分类号:TG17 |
| 文献标识码:A |
| 基金项目:甘肃省特种设备检验检测研究院2021科技项目(T202114). |
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| Effect of {1012} twins on corrosion properties of AZ31 magnesium alloy |
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ZHAO Xiaolong1, HAO Xiaobo2, YANG Jie3
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(1.Gansu Province Special Equipment Inspection and Testing Institute, Lanzhou 730050,China; 2.Luoyang Ship Material Research Institute, Luoyang 471023,China; 3.Southwest Jiaotong University, Chengdu 610000, China)
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| Abstract: |
| Magnesium and its alloys are widely used in aerospace, transportation and consumer electronics because of their light weight, high strength and good damping properties. However, their high chemical reactivity makes them susceptible to corrosioni in humid environments, increasing the risk of failure and greatly limiting their industrial applications. Numerous studies have shown that grain size has a significant impact on the corrosion resistance of magnesium alloys.In this paper, a large number of {101[KG-0.1mm]2} twin interfaces were introduced into AZ31 magnesium alloy through pre-deformation process to refine the initial microstructure of the alloy. The aim was to explore the correlation between the grain refinement effect induced by the introduction of twin interfaces and the corrosion resistance of AZ31 magnesium alloy. The results indicate that with the increase of deformation amount, the volume fraction of twins in AZ31 magnesium alloy gradually increases. The grain size first decreases and then increases, while the initial {0001}texture gradually transforms into {101[KG-0.1mm]0} and {101[KG-0.1mm]2} prismatic plane. In addition, the corrosion resistance of AZ31 magnesium alloy decreases with the increase of the pre-deformation amount. Analysis shows that the decrease in corrosion resistance of magnesium alloy induced by {101[KG-0.1mm]2} twinning is related to the change in twinning-induced texture. Compared with grain size, the change in crystal orientation has a more significant effect on the corrosion performance of AZ31 magnesium alloy. |
| Key words: AZ31 magnesium alloy twin crystal deformation corrosion property texture |
