PT Journal
AU Jenicek, S
   Opatova, K
   Kucerova, L
   Vorel, I
TI The Progress of Bainitic Transformation During Austempering in Connection with the Alloying of Unconventional AHS Steels
SO Manufacturing Technology Journal
PY 2022
BP 288
EP 296
VL 22
IS 3
DE Austempering; AHSS; Chromium; Silicon; RA
AB Incomplete bainitic transformation during austempering treatment is mainly caused by the supersatu-ration of austenite with carbon. Such supersaturated austenite becomes more stable and further stabi-lization is led by silicon alloying. Stable austenite does not transform and remains in the structure as so-called residual austenite. Therefore, carbides, which are desirable in a conventional bainitic struc-ture, cannot be formed and carbide free bainite is formed. The positive effect of silicon and carbon on austenite stabilization in CFB structures has already been demonstrated and described. However, another element that is crucial in the incomplete bainitic transformation is chromium. The influence of chromium on the development of microstructure in unconventional AHS steels during austemper-ing is discussed in the experiment in this paper.
ER