C.C. Liu
,
Z. Liu and G.X. Chen (Department of Mechanical Engineering
,
Tsinghua University
,
Beijing 100084
,
China)(Department of Mechanical Engineering
,
Tsinghua University
,
Beijing 100084
,
China)(Department of Mechanical Engineering
,
Tsinghua University
,
Beijing 100084
,
China)
金属学报(英文版)
ZBainitic transformation is analyzed in detail according to the factors such as morphology,crystallography,mechanical property of bainite and transformation kinetics,and conclusion is drawn that bainitic transformation is controlled by displacive mechanism and self-fempering of displacive microstructure.That is to say,bainite is the product of such procedure during which undercooled austemite first transforms into one certain displacive microstructure by displacive mechanism and then this microstructure experiences self-fempering.With this idea,several questions,which cannot be illustrated only by displacive transformation mechanism,can be explained successfully.
关键词:
bainitic transformation
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C.C. Liu
,
K.F. Yao
金属学报(英文版)
Based on the assumptions of parabolic variation of nucleation rate versus time andtransformation kinetics depending mainly on nucleation rate, a different model forbainitic transformation kinetics in hypoeutectoid steels was established. And this modelwas proved to be effective in the description of bainitic transformation by comparisonwith the result of conventional Avrami equation.
关键词:
bainitic transformation kinetics
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null
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