scholarly journals An Evaluation of Severe Plastic Deformation on the Densification Behaviour of Powder Metallurgy Aluminium Alloy Al-Mg-Si-Cu-Fe and Al-Zn-Mg-Cu

10.5772/14790 ◽  
2011 ◽  
Author(s):  
Rbert Bidulsk ◽  
Marco Actis ◽  
Jana Bidulsk ◽  
Rbert Koiko ◽  
Tibor Kvakaj
Keyword(s):  
Plastic Deformation ◽  
Powder Metallurgy ◽  
Severe Plastic Deformation ◽  
Aluminium Alloy ◽  
Densification Behaviour

Superplasticity of Aerospace 7075 (Al-Zn-Mg-Cu) Aluminium Alloy Obtained by Severe Plastic Deformation

2018 ◽  
Vol 385 ◽  
pp. 39-44 ◽  
Author(s):  
Fernando Carreño ◽  
Oscar A. Ruano
Keyword(s):  
Mechanical Properties ◽  
Plastic Deformation ◽  
Severe Plastic Deformation ◽  
Aluminium Alloy ◽  
Room Temperature ◽  
Grain Boundary Sliding ◽  
Strain Rates ◽  
Aerospace Applications ◽  
Boundary Sliding ◽  
Processing Stress

The 7075 (Al-Zn-Mg-Cu) aluminium alloy is the reference alloy for aerospace applications due to its specific mechanical properties at room temperature, showing excellent tensile strength and sufficient ductility. Formability at high temperature can be improved by obtaining superplasticity as a result of fine, equiaxed and highly misoriented grains prone to deform by grain boundary sliding (GBS). Different severe plastic deformation (SPD) processing routes such as ECAP, ARB, HPT and FSP have been considered and their effect on mechanical properties, especially at intermediate to high temperatures, are studied. Refined grains as fine as 100 nm and average misorientations as high as 39o allow attainment of high strain rate superplasticity (HSRSP) at lower than usual temperatures (250-300oC). It is shown that increasing misorientations are obtained with increasing applied strain, and increasing grain refinement is obtained with increasing processing stress. Thus, increasing superplastic strains at higher strain rates, lower stresses and lower temperatures are obtained with increasing processing strain and, specially, processing stress.

Superplasticity in a 5024 Aluminium Alloy Processed by Severe Plastic Deformation

2012 ◽  
Vol 735 ◽  
pp. 353-358 ◽  
Author(s):  
Anna Mogucheva ◽  
Diana Tagirova ◽  
Rustam Kaibyshev
Keyword(s):  
Plastic Deformation ◽  
Severe Plastic Deformation ◽  
Strain Rate ◽  
Aluminium Alloy ◽  
Initial Strain Rate ◽  
Strain Rates ◽  
Superplastic Behaviour ◽  
Angular Pressing ◽  
Elongation To Failure ◽  
Zr Alloy

The superplastic behaviour of an Al-4.6%Mg-0.35%Mn-0.2%Sc-0.09%Zr alloy was studied in the temperature range 250-500°C at strain rates ranging from 10-4 to 10-1 s-1. The AA5024 was subjected to equal channel angular pressing (ECAP) at 300°C up to ~12. The highest elongation-to-failure of ∼3300% was attained at a temperature of 450°C and an initial strain rate of 5.6×10-1 s-1. Regularities of superplastic behaviour of the 5024 aluminium alloy are discussed.

scholarly journals The Effects of Rolling Deformation and Annealing Treatment on Damping Capacity of 1200 Aluminium Alloy

2015 ◽  
Vol 819 ◽  
pp. 20-24
Author(s):  
Mohd Noor Mazlee ◽  
Shamsul Baharin Jamaludin ◽  
Y. Yasmin ◽  
Shaiful Rizam Shamsudin ◽  
M.S. Risby ◽  
...  
Keyword(s):  
Plastic Deformation ◽  
Severe Plastic Deformation ◽  
Aluminium Alloy ◽  
Microstructural Evolution ◽  
Rolling Direction ◽  
Annealing Treatment ◽  
Rolling Reduction ◽  
Damping Capacity ◽  
Percent Reduction ◽  
Rolling Deformation

Annealing treatment is an important step of rolling deformation that contributes to microstructural evolution and leads to the significant changes in damping capacity. Damping capacities were analyzed in the parallel to rolling direction at 1 and 10 Hz respectively. It was found that severe plastic deformation at 40 percent reduction has lower damping capacity compared to that of 30 percent and 20 percent reductions respectively. The microstructural results show that the grains of as rolled alloys were changed to almost equiaxed structures after a rolling reduction at 40 percent reduction.

scholarly journals Severe Plastic Deformation on Powder Metallurgy Cu–Al–Ni Shape Memory Alloys

2015 ◽  
Vol 2 ◽  
pp. S747-S750 ◽  
Author(s):  
G.A. López ◽  
I. López-Ferreño ◽  
A.R. Kilmametov ◽  
T. Breczewski ◽  
B.B. Straumal ◽  
...  
Keyword(s):  
Plastic Deformation ◽  
Powder Metallurgy ◽  
Severe Plastic Deformation ◽  
Shape Memory Alloys ◽  
Shape Memory

Microstructures in the 6060 aluminium alloy after various severe plastic deformation treatments

2011 ◽  
Vol 62 (3) ◽  
pp. 327-332 ◽  
Author(s):  
Bogusława Adamczyk-Cieślak ◽  
Jarosław Mizera ◽  
Krzysztof Jan Kurzydłowski
Keyword(s):  
Plastic Deformation ◽  
Severe Plastic Deformation ◽  
Aluminium Alloy
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