Title : ( Microstructural Evolution in Partially Homogenized AZ91 Alloy during Hot Rolling and Interpass Annealing )
Authors: Mahmoud Reza Ghandehari Ferdowsi , Mohammad Mazinani , Gholam Reza Ebrahimi ,
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Abstract
The as-cast AZ91 Mg alloy ingot with mean grain size of 98 μm after solution treatment was subjected to plastic deformation by multi-pass hot rolling. The process facilitated steady grain refinement by dynamic recrystallization with increasing rolling passes, and the final grain size was reduced to 6.4 μm by 4 rolling passes. Optical microscopy demonstrated that in the beginning of the rolling process twin DRX was the major dynamic recrystallization mechanism. In contrast, in 3rd and 4th passes of rolling new grains nucleated at grain boundaries, due to low grain size of the alloy.
Keywords
, Magnesium alloy, Dynamic recrystallization (DRX), Twin DRX, Hot rolling
@article{paperid:1034276,
author = {Ghandehari Ferdowsi, Mahmoud Reza and Mazinani, Mohammad and Gholam Reza Ebrahimi},
title = {Microstructural Evolution in Partially Homogenized AZ91 Alloy during Hot Rolling and Interpass Annealing},
journal = {Advanced Materials Research},
year = {2013},
volume = {626},
number = {1},
month = {January},
issn = {1022-6680},
pages = {445--448},
numpages = {3},
keywords = {Magnesium alloy; Dynamic recrystallization (DRX); Twin DRX; Hot rolling},
}
%0 Journal Article
%T Microstructural Evolution in Partially Homogenized AZ91 Alloy during Hot Rolling and Interpass Annealing
%A Ghandehari Ferdowsi, Mahmoud Reza
%A Mazinani, Mohammad
%A Gholam Reza Ebrahimi
%J Advanced Materials Research
%@ 1022-6680
%D 2013
