Predicting Critical Conditions and Stress-Strain Curves for Dynamic Recrystallization in SPHC Steel

2010 ◽  
Vol 17 (7) ◽  
pp. 51-57 ◽  
Author(s):  
Lai-zhi Wu ◽  
Xue-song Li ◽  
Jun Chen ◽  
Hong-bing Zhang ◽  
Zhen-shan Cui
Keyword(s):  
Dynamic Recrystallization ◽  
Critical Conditions ◽  
Stress Strain ◽  
Sphc Steel

scholarly journals Critical conditions and grain growth model for dynamic recrystallization of Cu-Ni-Si alloy

2019 ◽  
Vol 15 ◽  
pp. 102593 ◽  
Author(s):  
Jinlong Zhang ◽  
Zhenlin Lu ◽  
Lei Jia ◽  
Hui Xie ◽  
Shiping Tao ◽  
...  
Keyword(s):  
Dynamic Recrystallization ◽  
Grain Growth ◽  
Growth Model ◽  
Critical Conditions ◽  
Grain Growth Model

A Different View on Dynamic Recrystallization

2012 ◽  
Vol 715-716 ◽  
pp. 235-242 ◽  
Author(s):  
Günter Gottstein
Keyword(s):  
Grain Size ◽  
Steady State ◽  
Dynamic Recrystallization ◽  
Grain Boundaries ◽  
Experimental Results ◽  
Critical Conditions ◽  
New Approach ◽  
Theoretical Predictions

A new approach to dynamic recrystallization (DRX) is introduced. It is based on the assumption that the critical conditions for DRX and the arrest of DRX grain boundaries are related to the development of mobile subboundaries. The theoretical predictions are compared to experimental results during incipient and steady-state DRX. The grain size sensitivity of the DRX grains establishes the desired link between deformation and DRX microstructure.

Nucleation of Recrystallization in Mg Alloys during and after Hot Working

2012 ◽  
Vol 715-716 ◽  
pp. 96-101 ◽  
Author(s):  
Matthew R. Barnett ◽  
Aiden G. Beer
Keyword(s):  
Dynamic Recrystallization ◽  
Hot Working ◽  
Mg Alloys ◽  
Strain Response ◽  
Stress Strain ◽  
Local Texture ◽  
The Impact

Recrystallization nucleates at heterogeneities. The impact of this on local texture and stress-strain response in hot worked magnesium is considered in the present paper. Two aspects of bulge nucleation during dynamic recrystallization are considered.

Dynamic Recrystallization Behavior of Mg-Gd-Y-Zr Alloy during Hot Compression

2016 ◽  
Vol 849 ◽  
pp. 181-185 ◽  
Author(s):  
Shi Lun Yu ◽  
Yong Hao Gao ◽  
Chu Ming Liu ◽  
Hong Chao Xiao
Keyword(s):  
Dynamic Recrystallization ◽  
Strain Rate ◽  
Volume Fraction ◽  
Peak Stress ◽  
Critical Conditions ◽  
Recrystallization Behavior ◽  
Compression Tests ◽  
Dynamic Recrystallization Behavior ◽  
Increasing Temperature ◽  
The Cost

Dynamic recrystallization behavior of Mg-8.0Gd-3.0Y-0.5Zr (wt.%) alloy and the critical conditions corresponding to the onset of dynamic recrystallization were investigated using uniaxial compression tests conducted at temperatures ranging from 350 °C to 500 °C and strain rates ranging from 0.001 s-1 to 1 s-1. Results show that increasing temperature and/or decreasing strain rate can enhance the process of dynamic recrystallization of Mg-8.0Gd-3.0Y-0.5Zr alloy and lower the peak stress and corresponding strain. However, decreasing temperature and/or increasing strain rate can promote the occurrence of twin dynamic recrystallization (TDRX) within the original grains at the cost of reducing the total volume fraction of dynamically recrystallized grains in the microstructure. Besides, the critical stress and strain corresponding to the onset of dynamic recrystallization of Mg-8.0Gd-3.0Y-0.5Zr at 400 °C and 0.1 s-1 are 173MPa and 0.13, respectively.

Orientation Dependence of Dynamic Recrystallization Behavior of Al Single Crystals

2004 ◽  
Vol 449-452 ◽  
pp. 31-36
Author(s):  
Yasuhiro Miura ◽  
Kentaro Ihara
Keyword(s):  
Dynamic Recrystallization ◽  
Single Crystals ◽  
Orientation Dependence ◽  
Crystallographic Analysis ◽  
High Temperature Deformation ◽  
Temperature Deformation ◽  
Stress Strain ◽  
Strain Behavior ◽  
The Matrix ◽  
Dynamic Recrystallization Behavior

An experimental study on the microstructure development and stress–strain behavior during high temperature deformation of aluminum (Al) single crystals was made by using X-ray Laue technique and the electron backscatter pattern (EBSP) technique. The main purpose was to clarify the process of dynamic recrystallization (DRX). The measured stress-strain curves with large stress peaks and the new Laue spots without streaks at around the stress peaks confirmed the occurrence of DRX in Al single crystals with initial compression axis <111>, <011> or <001>. Crystallographic analysis by the Laue technique and EBSP technique show that the DRX grain and the matrix have an <121> axis in common in the <111> crystal, an <101> axsis in the <011> and <001> crystals. For the <111> crystal, the unrecrystallized region near the DRX grain consists of subgrains adjoined each other with <112> tilt boundaries and the size of subgrains becomes smaller and the misfit at subgrain boundaries becomes larger as the DRX grain boundaries are approached. These results suggest that DRX grains are nucleated through the development of subgrains.

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