我们已经研究过珠光体经大压下量冷轧后在短暂的高于A1温度的条件下,形成奥氏体的过程。这是人们关心的众多热化学处理(TMT)的基础,这类热处理涉及到在随后的空冷或淬火时上述奥氏体的再转变。无疑,没有经过变形的珠光体形成奥氏体的速率比变形后的慢得多。但是,变形后奥氏体和珠光体界面的生长率可能要低一些,这一点是出乎人们意料的。 We have studied the formation of austenite under the condition of a transient temperature above A1 during cold rolling of pearlite. This is the basis for numerous thermo-chemical treatments (TMT) of interest, which involve the re-transformation of the above austenite during subsequent air cooling or quenching. Undoubtedly, the rate of un-deformed pearlite forming austenite is much slower than after deformation. However, it is surprising that the growth rate of the austenite and pearlite interfaces may be lower after deformation.