HIGH-TEMPERATURE TEM IN SITU STUDY OF GROWTH KINETICS OF BAINITE IN β BRASS
Correspondent: YANG Yanqing; Department of Physics; Nanjing University; Nanjing 210008 YANG Yanqing;LIU Donghui;KANG Mokuang;SUN Yuan Northwestern Polytechnical University Beijing Centre of Physical and Chemical Analysis
Cite this article:
Correspondent: YANG Yanqing; Department of Physics; Nanjing University; Nanjing 210008 YANG Yanqing;LIU Donghui;KANG Mokuang;SUN Yuan Northwestern Polytechnical University Beijing Centre of Physical and Chemical Analysis. HIGH-TEMPERATURE TEM IN SITU STUDY OF GROWTH KINETICS OF BAINITE IN β BRASS. Acta Metall Sin, 1992, 28(3): 1-5.
Abstract In situ observation of the growth process of bainitic plate in β brass by means ofhigh--temperature TEM is conducted. The lengthening and thickening kinetics of bainitic plateis analysed with Trivedi's model and Zener--Hillert's model, respectively. It is found that thestacking fault substructure exists just in the growth tip of fresh bainitic plate and so does theshear stress in the matrix around the tip. The measured lengthening rate of bainitic plate is notconsistent with Trivedi's model. The thickening process is only macroscopically controlled byvolume diffusion but its nature is a shear process.