Microstructural path analysis of martensite burst
Microstructural path analysis of martensite burst
复制标题
马氏体爆裂的显微组织路径分析
DOI：
10.1590/s1516-14392010000100023
复制
发表时间：
2010
影响因子：
1.7
通讯作者：
J. Guimarães
中科院分区：
文献类型：
--
作者：
P. R. Rios;J. Guimarães
对马氏体反应进行建模需要考虑反应的空间方面。为此，我们使用形式动力学，更具体地说，微观结构路径方法（MPM）来分析在爆裂中观察到的微观结构。显微组织路径分析表明，扩展空间中扩展簇的尺寸（由Vandermeer和Juul-Jensen的撞击补偿平均截距长度λG表征）保持恒定，与母奥氏体晶粒尺寸无关。此外，目前的分析介绍了一个纯粹的形式化描述的反应进程，通过母奥氏体晶粒尺寸作为进展变量。这种描述非常有效，并得出了部分转变奥氏体的体积分数VVG与奥氏体晶粒尺寸λG之间的关系。这些发现的意义，在光的优点和缺点的正式动力学进行了讨论。
Modeling the martensite reaction requires reckoning with spatial aspects of the reaction. For that, we used formal kinetics, more specifically, the microstructural path method (MPM) to analyze the microstructure observed in a burst. The microstructural path analysis revealed that the size of the spread cluster in extended space, characterized by the Vandermeer and Juul-Jensen's impingement compensated mean intercept length, λG, remained constant, independently of the parent austenite grain size. Moreover, current analysis introduced a purely formal description of the reaction progress by taking the parent austenite grain size as the progress variable. This description worked very well and resulted in a relationship between the volume fraction of partially transformed austenite, VVG, and austenite grain size, λG. The significance of these findings in the light of the advantages and disadvantages of formal kinetics is discussed.