Solute Cluster Evolution During Deformation and High Strain Hardening Capability in Naturally Aged Al-Zn-Mg Alloy

2020 ◽  
Author(s):  
Peng Zhang ◽  
Kunkun Shi ◽  
Jianjun Bian ◽  
Jinyu Zhang ◽  
Yong Peng ◽  
...  
Keyword(s):  
Strain Hardening ◽  
High Strain ◽  
Mg Alloy ◽  
Cluster Evolution ◽  
Solute Cluster

Solute cluster evolution during deformation and high strain hardening capability in naturally aged Al–Zn–Mg alloy

2021 ◽  
Vol 207 ◽  
pp. 116682
Author(s):  
Peng Zhang ◽  
Kunkun Shi ◽  
Jianjun Bian ◽  
Jinyu Zhang ◽  
Yong Peng ◽  
...  
Keyword(s):  
Strain Hardening ◽  
High Strain ◽  
Mg Alloy ◽  
Cluster Evolution ◽  
Solute Cluster

Dynamic Testing at High Strain Rates of AZ31 Magnesium Alloys on SHPB Equipment

2013 ◽  
Vol 303-306 ◽  
pp. 2648-2651
Author(s):  
Xu Qing Chang ◽  
Tie Hua Ma
Keyword(s):  
Strain Rate ◽  
Optical Microscopy ◽  
Strain Hardening ◽  
High Strain ◽  
Split Hopkinson Pressure Bar ◽  
Mg Alloy ◽  
Strain Rates ◽  
Hopkinson Pressure Bar ◽  
High Strain Rates ◽  
Az31 Mg Alloy

The mechanical behaviour of as-cast AZ31 Mg alloy has been investigated at strain rates up to 2.0×103s-1. Dynamic tests were carried out at room temperature using a Split Hopkinson Pressure Bar (SHPB) apparatus. Microstructural characteristic were analysed by Image MAT A1 optical microscopy. The results demonstrated that AZ31 Mg alloy exhibited obvious yield phenomena and strain hardening behaviour at high strain rates. The basically same curvature of stress-strain curves exhibited an similar strain hardening rate. The dynamic yield strength changes little and the peak stress increases with the strain rates. An examination by optical microscopy after high strain rate deformation reveals the occurrence of twinning and twin area percentage increases with the strain rate increasing.

Study on Dynamic Mechanical Response of TC21 Alloy

2011 ◽  
Vol 88-89 ◽  
pp. 674-678
Author(s):  
Shuang Zan Zhao ◽  
Xing Wang Cheng ◽  
Fu Chi Wang
Keyword(s):  
Flow Stress ◽  
High Strain Rate ◽  
Strain Rate ◽  
Strain Hardening ◽  
High Strain ◽  
Dynamic Flow ◽  
Dynamic Mechanical ◽  
Hardening Effect ◽  
High Strain Rate Deformation ◽  
Binary Morphology

Some results of an experimental study on high strain rate deformation of TC21 alloy are discussed in this paper. Cylindrical specimens of the TC21 alloys both in binary morphology and solution and aging morphology were subjected to high strain rate deformation by direct impact using a Split Hopkinson Pressure Bar. The deformation process is dominated by both thermal softening effect and strain hardening effect under high strain rate loading. Thus the flow stress doesn’t increase with strain rate at the strain hardening stage, while the increase is obvious under qusi-static compression. Under high strain rate, the dynamic flow stress is higher than that under quasi-static and dynamic flow stress increase with the increase of the strain rate, which indicates the strain rate hardening effect is great in TC21 alloy. The microstructure affects the dynamic mechanical properties of TC21 titanium alloy obviously. Under high strain rate, the solution and aging morphology has higher dynamic flow stress while the binary morphology has better plasticity and less prone to be instability under high strain rate condition. Shear bands were found both in the solution and aging morphology and the binary morphology.

Evolution of dislocation and twin densities in a Mg alloy at quasi-static and high strain rates

2020 ◽  
Vol 201 ◽  
pp. 102-113
Author(s):  
M. Wang ◽  
X.Y. Xu ◽  
H.Y. Wang ◽  
L.H. He ◽  
M.X. Huang
Keyword(s):  
High Strain ◽  
Mg Alloy ◽  
Strain Rates ◽  
High Strain Rates

scholarly journals Shape-preserving machining produces gradient nanolaminate medium entropy alloys with high strain hardening capability

2019 ◽  
Vol 170 ◽  
pp. 176-186 ◽  
Author(s):  
Wei Guo ◽  
Zongrui Pei ◽  
Xiahan Sang ◽  
Jonathan D. Poplawsky ◽  
Stefanie Bruschi ◽  
...  
Keyword(s):  
Strain Hardening ◽  
High Strain ◽  
Shape Preserving

High Strain Rate Blow Formability of Newly Developed Al-Mg-High-Mn Alloy

2012 ◽  
Vol 735 ◽  
pp. 271-277 ◽  
Author(s):  
Tomoyuki Kudo ◽  
Akira Goto ◽  
Kazuya Saito
Keyword(s):  
Grain Size ◽  
High Strain Rate ◽  
Strain Rate ◽  
Mass Production ◽  
High Strain ◽  
Mg Alloy ◽  
Strain Rates ◽  
Fine Grain ◽  
Aa5083 Alloy ◽  
Complex Parts

Blow forming accompanied with superplasticity makes possible the forming of complex parts, which cannot be formed by cold press forming. The conventional superplastic AA5083 alloy ‘ALNOVI-1’ developed by the Furukawa-Sky Aluminum Corp. shows high superplasticity because of its fine grain and is widely used for blow forming. However, for mass production of components, an Al-Mg alloy with finer-sized grains is needed. In this research, the newly developed high Mn version of the Al-Mg alloy ‘ALNOVI-U’ is used, and this material possesses grains finer than those of the conventional AA5083 alloy. The effects of finer grain size on the blow formability at high strain rates over 10-2/s and the properties of the resulting moldings were studied.

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