黄学启, 刘雅政, 崔娟. Thermal Simulation Study on Controlled Rolling and Cooling Process for Quality Spring 60Si2CrVAT[J]. Special Steel, 2007, 28(6): 21-23.DOI:
structure and phase transformation of quality spring steel 60Si2CrVAT with different finishing rolling temperature and cooling rate have been examined and studied by Gleeble-1500 thermal mechanical simulator
optical microscope and transmission electron microsope. Results showed that as cooling rate was1 ℃/s
the pearlite content in spring steel 60Si2CrVAT was about 98%;with increasing cooling rate the ferite and pearlite content gradually decreased while bainite and martensite content increased; and as cooling rate was up to 9 ℃/g
the matrix was all martensite.With finishing temperature 850 ℃ and cooling rate 1 ℃/s
the sorbite content in spring steel 60Si2CrVAT was up to90% with excellent strength and toughness i.e. R