Journal of Material Sciences & Engineering

Graham CD

Publications

• Research Article
  Reversion of Martensite in 304 Stainless Steel Studied by Dilatometry and Calorimetry
  Author(s): Graham CD, Lorenz BE, Michael Citrin, Debby Greenstein and Raymond XuGraham CD, Lorenz BE, Michael Citrin, Debby Greenstein and Raymond Xu
  
  Dilatometry has been used to confirm that the reversion of deformation-induced martensite in Type 304 stainless steel occurs principally sin the temperature range 425 to 650°C, and to show that the reversion is a thermal or not diffusion controlled. An attempt to correlate the change in length of cold-drawn 304 wire samples on heating to 800°C with the martensite content determined from the measured saturation magnetization was only qualitatively successful. The heat of reversion of martensite in cold-drawn wire samples was found by differential scanning calorimetry to be in the range 1800 to 2200 J/mol in cold-drawn 304 wires, in reasonable agreement with values for the heat of formation of martensite in 4340 steel determined by a completely different method. We also observe an exothermic reaction near 650°C of a few hundred J/mol which we ascribe to the recrystallizat.. Read More»
  DOI: 10.4172/2169-0022.1000434

  Abstract PDF