Transformation of Deformed Austenite at Temperatures above the Ae3
Transformation of Deformed Austenite at Temperatures above the Ae3
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DOI：
10.4028/www.scientific.net/msf.706-709.2740
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发表时间：
2012-01
期刊：
影响因子：
--
通讯作者：
J. Jonas;V. Basabe;C. Ghosh
中科院分区：
文献类型：
--
作者：
J. Jonas;V. Basabe;C. Ghosh
综述了变形奥氏体转变的最新研究结果。结果表明，超平衡铁素体和珠光体可以在远高于Ae 3和Ae 1的温度下形成。存储的能量与引入的位错所引入的变形的作用进行了讨论。结果表明，正向动态转变为铁素体和珠光体比反向静态转变为奥氏体快几个数量级。还概述了铌等合金添加剂的缓凝作用。结果被解释在变形的变形奥氏体的转变有关的修改后的相图的影响。
Recent observations regarding the transformation of deformed austenite are reviewed. It is shown that superequilibrium ferrite and pearlite can be formed at temperatures well above the Ae3 and Ae1, respectively. The role of the stored energy associated with the introduction of the dislocations introduced by the deformation is discussed. It is shown that the forward dynamic transformation into ferrite and pearlite is several orders of magnitude faster than the reverse static transformation back into austenite. The retarding effect of alloying additions such as niobium is also outlined. The results are interpreted in terms of the effect of deformation on the modified phase diagrams pertaining to the transformation of deformed austenite.