Hot working and crystallographic texture analysis of magnesium AZ alloys
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. ISSN 0267-0836Full text not available from this repository.
Official URL: http://dx.doi.org/10.1179/026708309X12578491814799
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 > WMG (Formerly the Warwick Manufacturing Group)|
|Journal or Publication Title:||Materials Science and Technology|
|Official Date:||February 2011|
|Page Range:||pp. 461-477|
|Access rights to Published version:||Restricted or Subscription Access|
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