马氏体相变切变机制的实验和理论研究——评刘宗昌等的马氏体相变非切变机制

Experimental and Theoretical Studies of the Shear Mechanism of Martensitic Transformation—comment on non-shear mechanism of LIU Zong-chang et al

刘宗昌等学者近几年相继在国内杂志发表了有关马氏体相变非切变机制的论文,并将这些论文作为他们2012年出版的《马氏体相变》一书中的主要创新内容予以强调。他们否定已被国际公认的马氏体相变切变机制的主要依据有两条:1)马氏体相变切变机制缺乏实验基础,即缺乏现代实验技术,如透射电镜(TEM),原子力显微镜(AFM)的实验证明;2)根据他们的计算,马氏体切变能太大,相变驱动力无法克服切变能。本文作者首先结合马氏体晶体学表象理论(PTMC)给出论证马氏体相变切变机制的TEM和AFM实验;随后介绍徐祖耀提出的计算马氏体相变切变能的方法;最后评论刘宗昌等的论断和切变能的计算方法。

Liu Zongchang and other scholars have successively published papers on non-shear mechanism of martensitic transformation in domestic journals in recent years,and these papers was taken as main creative content and emphasized in《Maternitic Transformation》 book written by them published in 2012.They have negated the shear mechanism of martensitic transformation universally accepted by international researchers according to the following two arguments： a） the shear mechanism of martensitic transformation is devoid of experimentat verifications conducted by modern techniques such as transmission electron microscope（TEM） and atomic force microscope（AFM）;b） shear energy of martensitic transformation is too great to be overcome by the driving force of transformation,which originates from their calculation.Combining with the phenomenological theory of martensitic crystallography（PTMC）,the present author has given firstly TEM and AFM experiments to demonstrate the shear mechanism of martensitic transformation;then has introduced the calculation method of the shear energy proposed by Xu Zu-yao;finally has criticized the arguments and calculation method of shear energy putted forward by Liu Zongchang,et al.