کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1570549 | 1514369 | 2016 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: The morphology and orientation relationship variations of Q′ phase in Al–Mg–Si–Cu alloy The morphology and orientation relationship variations of Q′ phase in Al–Mg–Si–Cu alloy](/preview/png/1570549.png)
• The variations in morphology, OR and lattice parameters of Q′ phase were observed.
• The mechanism for the multiple OR was explained.
• The Si-network plays an important role in controlling the structure of Q′ phase.
The morphologies and orientation relationships (OR) of the Q′ phase in an over-aged Al––Mg–Si–Cu alloy were characterized by atomic resolution high-angle annular dark-field scanning transmission electron microscopy. Statistical results revealed that the OR of the rod-like Q′ phase with the Al matrix has a variable angle ranging from ~ 3.4° to 15.5° between (112-0)Q′ and (510)α, while the lath Q′ phase has a conventional OR with a constant angle of 11°. Such variations likely to be attributable to the ordering of Si-network in the Q′/β″ phase formed in the peak aging condition.
Journal: Materials Characterization - Volume 118, August 2016, Pages 279–283