In situ observation of ageing process and new morphologies of continuous precipitates in AZ91 magnesium alloy

In situ observation of ageing process and new morphologies of continuous precipitates in AZ91 magnesium alloy
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AZ91镁合金时效过程及连续析出物新形貌的原位观察

DOI:
10.1016/j.matlet.2007.03.013
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发表时间:
2007-10
期刊:
影响因子:
3
通讯作者:
--
中科院分区:
材料科学3区
文献类型:
--
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采用473K恒温8h的透射式电子显微镜,对压铸AZ91镁合金中γ-Mg17Al12相的析出过程进行了原位观察,除观察到薄板状连续析出物外,还观察到了棒状连续析出物和波特取向关系。首次观察到压铸AZ91镁合金中存在具有Pitsch-Schrader取向关系的板状连续析出相。
An in situ observation of the precipitating process of γ-Mg17Al12phase in die-cast AZ91 magnesium alloy, was carried out with a transmission electron microscope equipped with a heating stage maintained at 473 K for 8 h. In addition to the thin plate-shaped continuous precipitates, continuous precipitates with rod-shaped and the Potter orientation relationship were observed and analyzed with transmission electron microscopy including high-resolution transmission electron microscopy techniques. It was also observed firstly that there exist plate-shaped continuous precipitates with the Pitsch–Schrader orientation relationship in the die-cast AZ91 magnesium alloy.
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