RT Journal Article
SR Electronic
A1 Jeníček, Štěpán
A1 Opatová, Kateřina
A1 Kučerová, Ludmila
A1 Vorel, Ivan
T1 The Progress of Bainitic Transformation During Austempering in Connection with the Alloying of Unconventional AHS Steels
JF Manufacturing Technology Journal
YR 2022
VO 22
IS 3
SP 288
OP 296
UL https://journalmt.com/artkey/mft-202203-0013.php
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.