Hot deformation of Mg-Y-Zn alloy with a low content of the LPSO phase studied by in-situ synchrotron radiation diffraction
Hot deformation of Mg-Y-Zn alloy with a low content of the LPSO phase studied by in-situ synchrotron radiation diffraction
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DOI：
10.1016/j.jma.2019.11.009
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发表时间：
2020-03-01
影响因子：
17.6
通讯作者：
Dobron, Patrik
中科院分区：
文献类型：
--
作者：
Fekete, Klaudia Horvath;Drozdenko, Daria;Dobron, Patrik
研究了挤压态WZ42（Mg98.5Y1Zn0.5in.%）合金的压缩变形行为。利用同步辐射原位衍射技术研究了含有少量长周期堆垛有序相（LPSO）的镁合金。测试在室温和350摄氏度之间的温度下进行。通过扫描电子显微镜，特别是背散射电子成像和电子背散射衍射技术提供了详细的微观结构研究。结果表明，随着变形温度的升高，孪晶失去了主导地位，LPSO相的扭结变得更加明显。在高于200 ℃的温度下没有观察到LPSO相的裂纹，并且在LPSO相和Mg基体之间的界面处没有观察到脱粘。在350 ℃时，LPSO相失去强化作用，合金的变形主要通过Mg基体的动态再结晶实现。(c)2020由Elsevier B.V.代表重庆大学出版。
The compressive deformation behavior of the extruded WZ42 (Mg98.5Y1Zn0.5 in at.%) magnesium alloy containing a low amount of long-period stacking ordered (LPSO) phase was studied by in-situ synchrotron radiation diffraction technique. Tests were conducted at temperatures between room temperature and 350 degrees C. Detailed microstructure investigation was provided by scanning electron microscopy, particularly the backscattered electron imaging and electron backscatter diffraction technique. The results show that twinning lost its dominance and kinking of the LPSO phase became more pronounced with increasing deformation temperature. No cracks of the LPSO phase and no debonding r at the interface between the LPSO phase and the Mg matrix were observed at temperatures above 200 degrees C. At 350 degrees C, the LPSO phase lost its strengthening effect and the deformation of the alloy was mainly realized by the dynamic recrystallization of the Mg matrix. (c) 2020 Published by Elsevier B.V. on behalf of Chongqing University.