The effects of annealing phenomena on the energy absorption of roll-bonded Al-steel sheets during wedge tearing

Beygi, R ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1016/j.msea.2010.07.096
  3. Abstract:
  4. The purpose of this paper is to investigate the effects of annealing phenomena on the energy absorption of Al-steel bilayer sheets, bonded by cold rolling, through wedge tearing. Tearing by wedge is a dissipating energy system that includes three components: cutting, friction and plastic deformation due to bending. In order to find the bonding and annealing effects on energy absorption, the non-bonded bilayer sheets are prepared in the same condition of bonded ones. The results show that energy absorption of bonded sheets is larger than that of non-bonded ones. This is due to different plastic bending moment of bonded and non-bonded bilayer sheets. Whenever the bond is improved by heat treatment, the energy absorption during tearing is increased, however the flow stress is decreased. The bonded sheets heat-treated at temperatures higher than 500 °C show the behavior such as non-bonded ones. SEM images from interfaces of layers and EDS analysis show formation of Al-Fe intermetallic phase at these temperatures leading to low bond strength
  5. Keywords:
  6. Annealing phenomena ; Roll-bonded sheets ; Annealing effects ; Bilayer sheets ; Bond strength ; Bonded sheets ; EDS analysis ; Energy systems ; Fe intermetallics ; Flow stress ; Plastic bending ; SEM image ; Three component ; Absorption ; Aluminum ; Annealing ; Bending (deformation) ; Cold rolling ; Energy absorption ; Metal analysis ; Paper sheeting ; Phase interfaces ; Steel sheet
  7. Source: Materials Science and Engineering A ; Volume 527, Issue 27-28 , 2010 , Pages 7329-7333 ; 09215093 (ISSN)
  8. URL: http://www.sciencedirect.com/science/article/pii/S0921509310008488