Paper Title:
Recrystallization Mechanisms Leading to the Formation of Nanoscale Grains in a Ni-20%Cr Alloy Subjected to Intense Plastic Deformation
  Abstract

Microstructure evolution during annealing of a Ni-20%Cr alloy subjected to high-pressure torsion (HPT) at ambient temperature was examined. It was shown that recrystallization processes are dependent on the annealing temperature and strain. Discontinuous static recrystallization (DSRX) took place in the alloy strained to <3. Continuous grain growth (GG) occured under subsequent annealing in the material strained to ≥6. It was attributed to the fact that HPT led to the formation of nanoscale grains with an average size of 50 nm. Increasing fraction of these grains with strain led to transition from DSRX to continuous GG under subsequent annealing. The different annealing behavior was attributed to strong strain dependence for the relationship between driving pressures, which were caused by the stored dislocations and the boundary energy.

  Info
Periodical
Materials Science Forum (Volumes 667-669)
Edited by
Jing Tao Wang, Roberto B. Figueiredo and Terence G. Langdon
Pages
349-354
DOI
10.4028/www.scientific.net/MSF.667-669.349
Citation
N. Dudova, A. Belyakov, R. Kaibyshev, "Recrystallization Mechanisms Leading to the Formation of Nanoscale Grains in a Ni-20%Cr Alloy Subjected to Intense Plastic Deformation", Materials Science Forum, Vols. 667-669, pp. 349-354, 2011
Online since
December 2010
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Yuichi Miyahara, Kazuhiko Adachi, Yasuhiro Maehara, Z. Horita, Terence G. Langdon
Abstract:A commercial AZ31 Mg alloy was subjected to ECAP (equal-channel angular pressing) and the tensile properties were examined at room...
473
Authors: N.I. Vlasova, V.S. Gaviko, A.G. Popov, N.N. Shchegoleva, L.A. Stashkova, Dmitriy Gunderov, Xavier Sauvage
Abstract:Equiatomic FePd alloy in the ordered state has been processed by means of high-pressure torsion deformation (HPTD) and then annealed. X-ray...
392
Authors: Yong Jun Lan, C. Pinna
Chapter 24: Welding & Joining
Abstract:The Plane Strain Compression and Static Recrystallisation Textures of BCC Metals Have Been Simulated Using a Coupled 3D Crystal Plasticity...
3040
Authors: Olga Sukhopar, Günter Gottstein
Wednesday
Abstract:In the present study, a modified cellular automaton CORe (Cellular Operator for Recrystallization) was used to predict the recrystallization...
455
Authors: Wen Min Shi, Jing Liu, Chang Yi Li
Chapter 3: Iron and Steel
Abstract:The recrystallization behavior of the cold rolled 3%Si nonoriented electrical steel at different temperatures is investigated by...
678