Effect of Deformation Temperature and Strain on Recrystallization Behavior of a Nb Micro-Alloyed Steel |
| Journal |
Materials Science Forum (Volumes 544 - 545) |
| Volume |
Eco-Materials Processing and Design VIII |
| Edited by |
Hyungsun Kim, Junichi Hojo and Soo Wohn Lee |
| Pages |
47-50 |
| DOI |
10.4028/www.scientific.net/MSF.544-545.47 |
| Online since |
May, 2007 |
| Authors |
Zhao Hui Zhang,
Xiao Kai Liang,
Yong Ning Liu
|
| Keywords |
Metadynamic Recrystallisation, Nb, Static Recrystallization, Stress Relaxation |
| Abstract |
The post-dynamic softening of Nb micro-alloyed steel and plain carbon steel was
investigated through stress relaxation method. Meanwhile, By comparison with C-Mn steel, the
effect of deformation temperature and strain on post dynamic recrystallization of Nb steel was
studied . The result shows that element Nb in solution state can dramatically improve the apparent
activation energy of static recrystallization. At lower temperature, the recrystallization can be
retarded and precipitation of Nb(C, N) occured. If strain is more than the critical strain of dynamic
recrystallization, the metadynamic recrystallization takes place. If fully metadynamic
recrystallization takes place, the kinetics is no longer dependent on strain of the kind of steels. |
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