In situ observation of ageing process and new morphologies of continuous precipitates in AZ91 magnesium alloy
2007; Elsevier BV; Volume: 61; Issue: 25 Linguagem: Inglês
10.1016/j.matlet.2007.03.013
ISSN1873-4979
AutoresJun Zhou, Dan Zhao, R.H. Wang, Z. Sun, Jianbo Wang, Jinghua Gui, O. Zheng,
Tópico(s)Advanced Welding Techniques Analysis
ResumoAn in situ observation of the precipitating process of γ-Mg17Al12 phase 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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