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Physically based material model for evolution of stress-strain behavior of heat treatable aluminum alloys during solution heat treatment

Anjabin, N ; Sharif University of Technology | 2010

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  1. Type of Document: Article
  2. DOI: 10.1016/j.matdes.2009.05.045
  3. Publisher: 2010
  4. Abstract:
  5. A mathematical model based on Kocks-Mecking-Bergstrom model, has been proposed to predict the flow behavior of age hardenable aluminum alloys, under different conditions of solution heat treatment and hot deformation. Considering the published literature, most researchers have taken into account the precipitation and solution strengthening contribution to the flow stress by a constant and some others have ignored these effects. So these available descriptions cannot be applicable directly to different conditions of solution heat treatment. In order to enable these constitutive descriptions to take into account the effects of soaking time and temperature, we introduce in this research a relative volume fraction of precipitation into the flow stress by using the appropriate relationships. The GA-based optimization technique is used to evaluate the material constants within the equations from the uniaxial tensile test data of AA6082 reported by previous researchers
  6. Keywords:
  7. A. Non-ferrous metals and alloys ; C. Heat treatments ; E. Mechanical properties ; Flow behaviors ; Flow stress ; Heat treatable aluminum alloy ; Hot deformation ; Material constant ; Material models ; Optimization techniques ; Physically based ; Soaking time ; Solution heat treatment ; Solution strengthening ; Stress-strain behaviors ; Uniaxial tensile test ; Alumina ; Aluminum ; Aluminum alloys ; Mathematical models ; Mechanical properties ; Plastic flow ; Research ; Tensile testing ; Thermal effects ; Heat treatment
  8. Source: Materials and Design ; Volume 31, Issue 1 , 2010 , Pages 433-437 ; 02641275 (ISSN)
  9. URL: http://www.sciencedirect.com/science/article/pii/S0261306909002726