| 外加载荷对2124合金微观组织和性能的影响 |
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| 引用本文： | 权力伟,赵刚,田妮.外加载荷对2124合金微观组织和性能的影响[J].东北大学学报(自然科学版),2011,32(4):512-515. |
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| 作者姓名： | 权力伟 赵刚 田妮 |
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| 作者单位： | 东北大学,材料各向异性与织构教育部重点实验室,辽宁,沈阳,110819 |
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| 基金项目： | 国家自然科学基金，中央高校基本科研业务费专项资金资助项目，辽宁省博士启动基金 |
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| 摘 要： | 采用透射电镜、拉伸等实验研究了2124合金在190和170℃加载时效后的组织和性能的变化规律.结果表明,由于位错提供了足够的错配度,S相在各个方向上的取向和数量基本相同;外加载荷对Al-Cu-Mg合金中S相的择优取向没有较明显的影响,但其尺寸相对较小,外加载荷对GPB的尺寸和取向分布都没有影响;在190℃加载时效时S相...
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| 关 键 词： | Al-Cu-Mg合金 择优取向 S相 变形 |
Effect of Additional Load on the Performance and Microstructure of 2124 Alloy |
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| QUAN Li-wei,ZHAO Gang,TIAN Ni.Effect of Additional Load on the Performance and Microstructure of 2124 Alloy[J].Journal of Northeastern University(Natural Science),2011,32(4):512-515. |
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| Authors: | QUAN Li-wei ZHAO Gang TIAN Ni |
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| Institution: | QUAN Li-wei,ZHAO Gang,TIAN Ni(Key Laboratory for Anisotropy and Texture of Materials of the Ministry of Education,Northeastern University,Shenyang 110819,China.) |
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| Abstract: | Microstructure and performance were investigated on aged 2124 alloy at 190 and 170 ℃ with or without added load by means of TEM,tensile testing.Due to dislocations providing enough misfits for the nucleation of S phases,equivalent S phase distribution in various directions was obtained.Load did not significantly impact preferential orientation of the S phase.However,length of the S phase in aged samples with load was shorter than that without load.Load had no significant impact on preferential orientation and length of GPB.Growth rate of the S phase aged at 190 ℃ was faster than that at 170 ℃ with load.Because of a large amount of fine S phase precipitation,yield strength of the aged alloy with load was larger than that without load. |
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| Keywords: | Al-Cu-Mg alloy preferential orientation S phase deformation |
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