材料期刊网

1966年Aaronson根据热力学计算结果对钢的贝氏体转变的切变理论提出了异议,由此引发了一场世界范围的超过半个多世纪的对钢的贝氏体转变机制的研究和讨论高潮,有些问题已经得到共识,但有些问题依然存在分歧.在此期间,对马氏体转变及珠光体转变也有一些新的建树.现特以纯铁及碳钢为例,对珠光体、贝氏体、马氏体3个转变机制的现状进行了概括,其中包括了本文作者的一些分析和判断.衷心希望读者对本文提出批评指正.

The different views expressed in 1966 by Aaronson on the shear theory of bainite transformation mechanism of steels,the results of thermodynamic calculating has triggered intensive worldwide discussion in this area for more than half a century.To date,a consensus on many of the issues are reached.However,disparities on a number of other issues still exist.During this period of time,some new breakthroughs on both the martensitic and the pearlite transformation mechanisms have also been made.In this paper,pure iron and carbon steel are used as examples to provide an overview of the current status of transformation mechanisms of pearlite,bainite,and martensite.This paper will also include the exclusive analysis and judgment of the author.Any comments and suggestions are welcomed.