Kinetics of dynamic recrystallization in cobalt: A study using the Avrami relation

被引:17
|
作者
Sarkar, A. [1 ]
Chakravartty, J. K. [1 ]
Paul, B. [1 ]
Suri, A. K. [1 ]
机构
[1] Bhabha Atom Res Ctr, Mat Grp, Bombay 400085, Maharashtra, India
关键词
Co; recrystallization kinetics; stress-strain relations; AUSTENITIC STAINLESS-STEEL; HOT DEFORMATION; MULTIPLE-PEAK; WORKING; NICKEL; STRAIN; ALLOY;
D O I
10.1002/pssa.201127001
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The progress of dynamic recrystallization (DRX) in polycrystalline wrought cobalt (Co) during hot deformation has been studied using a newly developed mechanical approach. The approach is based upon the analysis of the flow curve of the material to quantify the softening which is attributed to DRX. Avrami plots for Co during DRX have been generated using stress strain curves under various deformation conditions. The values of the Avrami time exponents are similar to 3.0. The dependence of the time of half-softening on strain rate is found to exhibit similar behavior to that of other materials. (C) 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
引用
收藏
页码:814 / 818
页数:5
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