The Effect of Isothermal Heat Treatment Time on the Microstructure and Properties of 2.11% Al Austempered Ductile Iron

  title={The Effect of Isothermal Heat Treatment Time on the Microstructure and Properties of 2.11\% Al Austempered Ductile Iron},
  author={H. R. Erfanian-Naziftoosi and Nima Haghdadi and Ali-Reza Kiani-Rashid},
  journal={Journal of Materials Engineering and Performance},
In this article, the bainitic transformation during austempering was studied for a 2.11% Al containing ductile iron under different isothermal holding times. The austenitizing time and temperature were selected to be 60 min and 920 °C, respectively, referring to previous studies. The isothermal austempering heat treatments were performed at 350 °C for different durations. Microstructures have been examined by optical microscopy, scanning electron microscopy, and transmission electron microscopy… 
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