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  4. Orientation Preference of Recrystallization in Supersaturated Aluminum Alloys Influenced by Concurrent Precipitation
 
research article

Orientation Preference of Recrystallization in Supersaturated Aluminum Alloys Influenced by Concurrent Precipitation

Zhao, Qinglong
•
Huang, Ke  
•
Li, Yanjun
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2016
Metallurgical and Materials Transactions A

The influence of concurrent precipitation on recrystallization is analyzed by comparing the nucleation and growth behavior of P ({011} 〈566〉), Cube ({001} 〈100〉), and 20 deg ND-rotated Cube ({001} 〈310〉, NDcube)-oriented grains in Al-xMn-Fe-Si (x = 0, 0.4, 1.0 wt pct) alloys. The number densities of recrystallized grains in alloys annealed at various temperatures clearly demonstrate that concurrent precipitation significantly reduces the nucleation density of recrystallization. However, this effect varies strongly with grain orientation, and the P orientation is affected less than other orientations, in particular the Cube orientation. The number fraction of P-oriented grains can increase ten times as the effect of concurrent precipitation enhances. The P- and NDcube-oriented grains grow faster than Cube grains when strong concurrent precipitation occurs. However, on the other hand, when precipitation is limited or completely absent, P grains grow more slowly than Cube (and NDcube) grains. Micro-segregation enhances the effect of concurrent precipitation, indicating that the effect is closely related to heterogeneous distribution of precipitation.

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Type
research article
DOI
10.1007/s11661-015-3314-5
Web of Science ID

WOS:000371308200036

Author(s)
Zhao, Qinglong
Huang, Ke  
Li, Yanjun
Marthinsen, Knut
Date Issued

2016

Publisher

Springer Verlag

Published in
Metallurgical and Materials Transactions A
Volume

47

Issue

3

Start page

1378

End page

1388

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LMTM  
Available on Infoscience
January 5, 2016
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/121997
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