Mechanism Responsible for Dynamic Recrystallization for Repeated Plastic Working Deformation Process

Xu Dong Wang; Wen Bo Du; Zhao Hui Wang; Shu Bo Li

doi:10.4028/www.scientific.net/MSF.667-669.511

Paper Titles

Development of Ultra-Fine Grained Structure in an Al-5.4%Mg-0.5%Mn Alloy Processed by ECAP
p.487

Microstructure Evolution in a Cu-Ag Alloy during Large Strain Deformation and Annealing
p.493

Grain Refinement and Hardening Induced by Heavy Deformation Using Low Energy High Current Pulsed Electron Beam Surface Treatment
p.499

Synergetic Effect of ECAP and Friction Stir Welding on Microstructure and Mechanical Properties of Aluminium Sheets
p.505

Mechanism Responsible for Dynamic Recrystallization for Repeated Plastic Working Deformation Process
p.511

Dispersion of the Structure in Al-Based Alloys by Different Methods of Severe Plastic Deformation
p.517

Processing and Characterization of Pure Nickel Sheets by Constrained Groove Pressing (CGP) Technique
p.523

Microstructure of Pure Ni Subjected to High Pressure Torsion
p.529

Effect of ECAP on the Dimensional and Morphological Characteristics of High Performance Aluminium PM Alloy
p.535

HomeMaterials Science ForumMaterials Science Forum Vols. 667-669Mechanism Responsible for Dynamic...

Mechanism Responsible for Dynamic Recrystallization for Repeated Plastic Working Deformation Process

Abstract:

The repeated plastic working deformation(RPW) process can reduce grain size of a Mg alloy from 50-100 um to 10-500 nm, but the mechanism responsible for it has not been clear up to now. In the present paper, the effect of RPW deformation process on the grain size of Mg-5Gd-1Er alloy has been studied, and a series microstructural evaluations were performed to investigate the possible mechanism for RPW deformation by using transmission electron microscopy. Although there are no twinning or fibrous microstructures, the dynamic recrystallization, which usually occurs in high stacking fault energy metals, has been found in the alloy deformed by RPW process. The results indicated that the vacancy diffusion played an important role in this kind of dynamic recrystallization. According to the evolution of microstructure, a mechanism was proposed to explain the dynamic recrystallization for RPW deformation process.

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Periodical:

Materials Science Forum (Volumes 667-669)

Pages:

511-515

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.667-669.511

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Online since:

December 2010

Authors:

Xu Dong Wang, Wen Bo Du, Zhao Hui Wang, Shu Bo Li

Keywords:

Dynamic Recrystallization (DRX), RPW Process, Vacancy Diffusion

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