Investigation of superplasticity and dynamic grain growth in ultrafine-grained Al-0.5%Mg-Sc alloys

2021 ◽  
pp. 160099
Author(s):  
V.N. Chuvil'deev ◽  
M.Yu. Gryaznov ◽  
S.V. Shotin ◽  
V.I. Kopylov ◽  
A.V. Nokhrin ◽  
...  
Keyword(s):  
Grain Growth ◽  
Ultrafine Grained ◽  
Dynamic Grain Growth

scholarly journals Investigation of Effect of Preliminary Annealing on Superplasticity of Ultrafine-Grained Conductor Aluminum Alloys Al-0.5%Mg-Sc

Materials ◽  
2021 ◽  
Vol 15 (1) ◽  
pp. 176
Author(s):  
Mikhail Gryaznov ◽  
Sergey Shotin ◽  
Aleksey Nokhrin ◽  
Vladimir Chuvil’deev ◽  
Constantine Likhnitskii ◽  
...  
Keyword(s):  
Grain Growth ◽  
Volume Fraction ◽  
Ultrafine Grained ◽  
Preliminary Annealing ◽  
Specimen Material ◽  
Localization Of Plastic Deformation ◽  
Long Time ◽  
Elongation To Failure ◽  
Maximum Volume Fraction ◽  
Dynamic Grain Growth

Effect of preliminary precipitation of Al3Sc particles on the characteristics of superplastic conductor Al-0.5%Mg-X%Sc (X = 0.2, 0.3, 0.4, 0.5 wt.%) alloys with ultrafine-grained (UFG) microstructure has been studied. The precipitation of the Al3Sc particles took place during long-time annealing of the alloys at 300 °C. The preliminary annealing was shown to affect the superplasticity characteristics of the UFG Al-0.5%Mg-X%Sc alloys (the elongation to failure, yield stress, dynamic grain growth rate) weakly but to promote more intensive pore formation and to reduce the volume fraction of the recrystallized microstructure in the deformed and non-deformed parts of the aluminum alloy specimens. The dynamic grain growth was shown to go in the deformed specimen material nonuniformly–the maximum volume fraction of the recrystallized microstructure was observed in the regions of the localization of plastic deformation.

Microstructural evolution at large driving forces during grain growth of ultrafine-grained Ni–1.2wt%P

1992 ◽  
Vol 131 (2) ◽  
pp. 569-575 ◽  
Author(s):  
D. Osmola ◽  
P. Nolan ◽  
U. Erb ◽  
G. Palumbo ◽  
K. T. Aust
Keyword(s):  
Grain Growth ◽  
Microstructural Evolution ◽  
Driving Forces ◽  
Ultrafine Grained

Dynamic grain growth in Al–6Ni: Modelling and experiments

2005 ◽  
Vol 53 (16) ◽  
pp. 4313-4321 ◽  
Author(s):  
K HYDE ◽  
P BATE
Keyword(s):  
Grain Growth ◽  
Dynamic Grain Growth

Recrystallization and Grain Growth due to Annealing of an Ultrafine-Grained Al Alloy

2013 ◽  
Vol 753 ◽  
pp. 303-306
Author(s):  
Aicha Loucif ◽  
Roberto B. Figueiredo ◽  
Thierry Baudin ◽  
François Brisset ◽  
Terence G. Langdon
Keyword(s):  
Grain Size ◽  
Grain Growth ◽  
Vickers Microhardness ◽  
High Pressure Torsion ◽  
Al Alloy ◽  
Size Refinement ◽  
Ultrafine Grained ◽  
Different Temperatures ◽  
Deformed State ◽  
Misorientation Angles

The evolution of the recrystallization microstructure at different temperatures and the related change in the microhardness were studied in an Al-6061 alloy after 2 turns of high-pressure torsion (HPT) by means of Vickers microhardness and EBSD analysis. The corresponding results show that HPT processing introduces a significant grain size refinement for the deformed state by comparison with the 150 µm grain size in the initial material. The microstructure after annealing at 200°C is relatively close to the as-processed one and the distribution of misorientation angles remains essentially unchanged. However, significant microstructural changes are produced with increasing annealing temperature and at the highest temperature (400°C) there is an abnormal grain growth. The variation of Vickers microhardness (Hv) after the different annealing treatments show a gradual decrease when the temperature increases.

The Effect of Strain Rate History on the Dynamic Grain Growth Behaviour of AA 5083

2007 ◽  
Vol 551-552 ◽  
pp. 627-632
Author(s):  
B. Zhang ◽  
Pete S. Bate ◽  
Norman Ridley
Keyword(s):  
Strain Rate ◽  
Grain Growth ◽  
Significant Influence ◽  
Mechanical Behaviour ◽  
Strain Rates ◽  
Growth Behaviour ◽  
Superplastic Behaviour ◽  
Dynamic Grain Growth

Dynamic grain growth in superplastic AA5083 deformed at constant strain rates and varying strain rates has been studied. It has been found that the strain rate history has a significant influence on the grain growth behaviour. It is proposed that differences in mechanical behaviour of AA5083 for the strain rate conditions examined can be attributed to differences in the grain growth behaviour. The influence of dynamic grain growth on the superplastic behaviour of AA5083 is discussed.

Dynamic grain growth during superplastic deformation

1996 ◽  
Vol 44 (5) ◽  
pp. 2073-2078 ◽  
Author(s):  
M.Kh. Rabinovich ◽  
V.G. Trifonov
Keyword(s):  
Grain Growth ◽  
Superplastic Deformation ◽  
Dynamic Grain Growth
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