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Study on the dynamic and static softening phenomena in Al-6Mg alloy during two-stage deformation through interrupted hot compression test

Pouraliakbar, H ; Sharif University of Technology | 2016

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  1. Type of Document: Article
  2. DOI: 10.1016/j.measurement.2015.08.033
  3. Publisher: Elsevier, B. V , 2016
  4. Abstract:
  5. The dynamic and static softening phenomena in Al-6Mg alloy were studied through interrupted two-stage hot compression test performed isothermally at 480°C and strain rate range of 0.001-0.1 s-1. The interruptions of 29 and 90 s were considered when the true strain reached 0.5. It was concluded that the effect of static softening on the flow stress was not highlighted by extending the interruption at a constant strain rate. Also, it was exhibited that softening rate highly enhanced with the strain rate decrement at a constant time. Moreover, the static and dynamic recrystallization was revealed as the dominant softening mechanisms at low and high strain rates, respectively
  6. Keywords:
  7. Al-6Mg alloy ; Compression test ; Flow stress ; Hot deformation ; Interrupted deformation ; Aluminum ; Compression testing ; Deformation ; Dynamic recrystallization ; Hot working ; Plastic flow ; Constant strain rate ; Constant time ; Dynamic softening ; High strain rates ; Mg alloy ; Softening mechanisms ; Softening phenomenon ; Two stage deformation ; Strain rate
  8. Source: Measurement: Journal of the International Measurement Confederation ; Volume 77 , 2016 , Pages 50-53 ; 02632241 (ISSN)
  9. URL: http://www.sciencedirect.com/science/article/pii/S0263224115004571