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Hot working and crystallographic texture analysis of magnesium AZ alloys
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Bhattacharya, R. and Wynne, B. (2011) Hot working and crystallographic texture analysis of magnesium AZ alloys. Materials Science and Technology, Vol.27 (No.2). pp. 461-477. doi:10.1179/026708309X12578491814799 ISSN 0267-0836.
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Official URL: http://dx.doi.org/10.1179/026708309X12578491814799
Abstract
The hot working behaviour of magnesium AZ (e. g. AZ31; Al: 3%, Zn: 1%) alloys and their associated crystallographic texture evolution is reviewed. Under hot working conditions, the stress-strain curves show flow softening at all the temperatures and strain rates indicating dynamic recrystallisation (DRX) is predominant. The mean size of the recrystallised grains in all the alloys decreases as the value of Zener-Hollomon parameter Z increases. The hot working range of the alloys dwell between 200 and 500 degrees C and the strain rates between 10(-3) and 5 s(-1). The hot working of AZ series alloy shows discontinuous DRX as the main mechanism. Equal channel angular processing shows continuous DRX. The constitutive equation development shows a linear relationship between the stress and the Z parameter. The activation energy for the alloys ranges from 112 to 169 kJ mol(-1) and Z values range from 10(7) to 10(14) s(-1). Textural examinations show basal texture as the predominant orientation.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||
| Journal or Publication Title: | Materials Science and Technology | ||||
| Publisher: | Maney Publishing | ||||
| ISSN: | 0267-0836 | ||||
| Official Date: | February 2011 | ||||
| Dates: |
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| Volume: | Vol.27 | ||||
| Number: | No.2 | ||||
| Page Range: | pp. 461-477 | ||||
| DOI: | 10.1179/026708309X12578491814799 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access |
Data sourced from Thomson Reuters' Web of Knowledge
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