| 喷射沉积Al-Zn-Mg-Cu合金GP区应变场的定量测试 |
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| 引用本文： | 侯小虎,白朴存,赵春旺,邢永明.喷射沉积Al-Zn-Mg-Cu合金GP区应变场的定量测试[J].实验力学,2011,26(1):16-20. |
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| 作者姓名： | 侯小虎 白朴存 赵春旺 邢永明 |
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| 作者单位： | 1. 内蒙古工业大学材料科学与工程学院,呼和浩特,010051
2. 内蒙古工业大学理学院,呼和浩特,010051 |
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| 基金项目： | 国家自然科学基金资助项目(10962005和10562003) |
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| 摘 要： | 为定量测试喷射沉积合金GP区周围的晶格应变的分布,利用喷射成形技术制备了Al12Zn2.4Mg1.1Cu合金。随后对合金进行热挤压、758K固溶2小时和393K时效20小时处理。利用高分辨透射电子显微镜(High Resolution Transmission Electron Microscopy,HRTEM)和几何相位分析(Geometric Phase Analysis,GPA)软件对GP区的结构和应变场进行了测量和分析。结果表明,GP区附近的应变值在各方向差别较大,沿GP区惯习面法线方向的应变最大(εxx=-0.092),与惯习面平行方向上的应变最小(εyy=-0.004)。该项结果可解释GP区附近位错运动的差异:由于应变场在各方向上存在较大差别,产生的应变强化效果不同,导致阻碍位错运动的能力也有所不同。
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| 关 键 词： | 透射电镜 GP区 应变 几何相位分析 |
Strain Field Quantitative Measurement around GP Zones Formed by an Al-Zn-Mg-Cu Alloy Spray Deposition |
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| HOU Xiao-hu,BAI Pu-cun,ZHAO Chun-wang and XING Yong-ming.Strain Field Quantitative Measurement around GP Zones Formed by an Al-Zn-Mg-Cu Alloy Spray Deposition[J].Journal of Experimental Mechanics,2011,26(1):16-20. |
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| Authors: | HOU Xiao-hu BAI Pu-cun ZHAO Chun-wang and XING Yong-ming |
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| Institution: | College of Materials Science and Engineering, Inner Mongolia University of Technology, Hohhot 010051, China;College of Materials Science and Engineering, Inner Mongolia University of Technology, Hohhot 010051, China;College of Science, Inner Mongolia University of Technology, Hohhot 010051,China;College of Science, Inner Mongolia University of Technology, Hohhot 010051,China |
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| Abstract: | In order to quantitatively measure the lattice strain distribution around GP zone,an Al12Zn2.4Mg1.1Cu alloy was prepared by spray deposition.Alloy samples were subsequently processed by hot extrusion,solid solution treatment at 758K for 2 hours and aging at 393K for 20 hours.The structure and strain field of GP zones in the alloy was experimentally investigated based on High Resolution Transmission Electon Microscopy(HRTEM) and geometric phase analysis(GPA).Experimental results show that obvious strain diff... |
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| Keywords: | Transmission Electron Microscopy GP zones strain geometric phase analysis |
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