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Evaluation of strain fields caused by the n' phase in an Al-Zn-Mg-Cu alloy

机译：评估Al-Zn-Mg-Cu合金中n'相引起的应变场

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摘要

Strain fields around the η' phase precipitated in an Al-12Zn-2.4Mg-l.lCu alloy were quantitatively measured employing high-resolution transmission electron microscopy (HRTEM) and geometric phase analysis (GPA) technique. Afterwards, experimental strain maps were compared with the simulated strain maps obtained from a simulated HRTEM image which was created using the CrystalMaker and JEMS software. Compressive strain is found around the r|' phase, and the maximum compressive strain is about 2.8%. The simulated results are consistent with the experimental results to describe the distributions of strain fields around the η' phase along the x direction which is parallel to [111]_(Al) direction.
机译：使用高分辨率透射电子显微镜（HRTEM）和几何相分析（GPA）技术对Al-12Zn-2.4Mg-1.1Cu合金中η'相周围析出的应变场进行了定量测量。然后，将实验应变图与从使用CrystalMaker和JEMS软件创建的模拟HRTEM图像获得的模拟应变图进行比较。在r |'附近发现压缩应变相，最大压缩应变约为2.8％。模拟结果与实验结果吻合，描述了沿着平行于[111] _（Al）方向的x方向η'相周围的应变场分布。

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