High-temperature TEM in situ study of growth kinetics of bainite in β brass

被引：0
|
作者：
Yang, Yanqing [1 ]
Liu, Donghui [1 ]
Kang, Mokuang [1 ]
Sun, Yuan [1 ]
机构：
[1] Northwestern Polytechnical Univ, Xi'an, China
来源：
Acta Metallurgica Sinica Series A, Physical Metallurgy & Materials Science | 1992年 / 5 A卷 / 05期
关键词：
Bainite - Growth kinetics;
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学科分类号：
摘要：
In situ observation of the growth process of bainitic plate in β brass by means of high-temperature TEM was conducted. The lengthening and thickening kinetics of bainitic plate was analysed with Trivedi's model and Zener-Hiller's model, respectively. It is found that the stacking fault substructure exists just in the growth tip of fresh bainitic plate and so does the shear stress in the matrix around the tip. The measured lengthening grate of bainitic plate is not consistent with Trivedi's model. The thickening process is only macroscopically controlled by volume diffusion but its nature is a shear process.
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页码：309 / 313
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