Effect of precipitation state on plastic anisotropy in sheets of the age-hardenable aluminium alloys AA 6016 and AA 7021

2021 ◽  
pp. 142324
Author(s):  
Olaf Engler
Keyword(s):  
Aluminium Alloys ◽  
Plastic Anisotropy

Plastic anisotropy of ultrafine grained aluminium alloys produced by accumulative roll bonding

2010 ◽  
Vol 527 (13-14) ◽  
pp. 3271-3278 ◽  
Author(s):  
B. Beausir ◽  
J. Scharnweber ◽  
J. Jaschinski ◽  
H.-G. Brokmeier ◽  
C.-G. Oertel ◽  
...  
Keyword(s):  
Accumulative Roll Bonding ◽  
Aluminium Alloys ◽  
Plastic Anisotropy ◽  
Roll Bonding ◽  
Ultrafine Grained

The Application of Multiscale Modelling for the Prediction of Plastic Anisotropy and Deformation Textures

2005 ◽  
Vol 495-497 ◽  
pp. 31-44 ◽  
Author(s):  
Paul van Houtte ◽  
Albert Van Bael ◽  
Marc Seefeldt ◽  
Laurent Delannay
Keyword(s):  
Metal Forming ◽  
Aluminium Alloys ◽  
Dislocation Substructure ◽  
Plastic Anisotropy ◽  
Microscopic Level ◽  
Finite Element Models ◽  
Taylor Model ◽  
Deformation Textures ◽  
Level Model ◽  
Multi Level

The paper focuses on the multi-level character of existing or currently developed models for polycrystal deformation. A general multilevel frame is presented, which can be applied to models for the simulation of plastic anisotropy to be implemented in FE codes for the simulation of metal forming processes, or to models for the simulation of deformation textures. A short overview is presented of two-level models ranging from the full-constraints Taylor model to the crystalplasticity finite element models, including the description of a few recent and efficient models (GIA and ALAMEL). Validation efforts based on experimental cold rolling textures obtained for steel and aluminium alloys are discussed. Finally a recent three-level model which also takes the microscopic level (dislocation substructure) is discussed.

The plastic anisotropy of two-phase aluminium alloys—I. Anisotropy in unidirectional deformation

1981 ◽  
Vol 29 (11) ◽  
pp. 1797-1814 ◽  
Author(s):  
P. Bate ◽  
W.T. Roberts ◽  
D.V. Wilson
Keyword(s):  
Aluminium Alloys ◽  
Plastic Anisotropy ◽  
Two Phase

“Cavity” formation in superplastically deformed aluminium alloys

1990 ◽  
Vol 48 (4) ◽  
pp. 958-959
Author(s):  
A. Cziráki ◽  
E. Ková-csetényi ◽  
T. Torma ◽  
T. Turmezey
Keyword(s):  
Grain Boundaries ◽  
Aluminium Alloys ◽  
Superplastic Deformation ◽  
Volume Fraction ◽  
Superplastic Forming ◽  
Polished Surface ◽  
Cavity Formation ◽  
Stress Concentrations ◽  
Electron Microscopic ◽  
Commercial Aluminium

It is known that the formation of cavities during superplastic deformation can be correlated with the development of stress concentrations at irregularities along grain boundaries such as particles, ledges and triple points. In commercial aluminium alloys Al-Fe-Si particles or other coarse constituents may play an important role in cavity formation.Cavity formation during superplastic deformation was studied by optical metallography and transmission scanning electron microscopic investigations on Al-Mg-Si and Al-Mg-Mn alloys. The structure of particles was characterized by selected area diffraction and X-ray micro analysis. The volume fraction of “voids” was determined on mechanically polished surface.It was found by electron microscopy that strongly deformed regions are formed during superplastic forming at grain boundaries and around coarse particles.According to electron diffraction measurements these areas consist of small micro crystallized regions. See Fig.l.Comparing the volume fraction and morphology of cavities found by optical microscopy a good correlation was established between that of micro crystalline regions.

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