The Effect of Equal Channel Angular Pressing on Coarsening Kinetics of AZ80–0.2Y–0.15Ca Alloy in Semisolid State

2020 ◽  
Vol 22 (12) ◽  
pp. 2000415
Author(s):  
Lingling Fan ◽  
Mingyang Zhou ◽  
Lingbao Ren ◽  
Houyi Li ◽  
Hongtao Zhang ◽  
...  
Keyword(s):  
Equal Channel Angular Pressing ◽  
Semisolid State ◽  
Angular Pressing ◽  
Coarsening Kinetics ◽  
Kinetics Of

Kinetics of phase precipitation in Al-Mg-Si alloys subjected to equal-channel angular pressing during subsequent heating

2021 ◽  
pp. 160583
Author(s):  
N.R. Bochvar ◽  
O.V. Rybalchenko ◽  
N. Yu. Tabachkova ◽  
G.V. Rybalchenko ◽  
N.P. Leonova ◽  
...  
Keyword(s):  
Equal Channel Angular Pressing ◽  
Phase Precipitation ◽  
Angular Pressing ◽  
Subsequent Heating ◽  
Kinetics Of

scholarly journals Electromagnetic Stirring versus ECAP: Morphological Comparison of Al-Si-Cu Alloys to Make the Microstructural Refinement for Use in SSM Processing

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Luis Vanderlei Torres ◽  
Luis Fernando Torres ◽  
Eugênio José Zoqui
Keyword(s):  
Equal Channel Angular Pressing ◽  
Morphological Evolution ◽  
Direct Chill ◽  
Solid Particles ◽  
Electromagnetic Stirring ◽  
Semisolid State ◽  
Morphological Comparison ◽  
Globular Structure ◽  
Cross Sectional ◽  
Angular Pressing

This work evaluates the morphological evolution at the semisolid state of the Al-4.0wt%Si-2.5wt%Cu alloy produced by direct chill casting under electromagnetic stirring (EMS) and by one equal channel angular pressing (ECAP) pass. The ECAP emerged as a promising technique capable of reduction and homogeneous metals microstructure imposing large deformations occurs in a matrix that contains two channels of the same cross-sectional area and forms an angle of 120°. The materials were submitted to reheating treatment in condition of 60% solid fraction at treatment times of 0, 30, and 90 s. Comparing the two cases, we have the presented ECAP process that had an excellent response to the recovery and recrystallization mechanisms, and refined microstructures ideal for thixoforming were produced. Primary particle sizes of about 45 μm and grain sizes of about 75 μm and a circularity shape factor of more than 0.60 were obtained. The low silicon alloy, Al-4.0wt%Si-2.5wt%Cu, presented excellent refinement when processed via equal channel angular pressing, presenting good morphological stability at the semisolid state, without significant changes in size or shape of the solid particles. This fully globular structure is favourable for thixoforming processes.

Coarsening kinetics of multiaxial forging (MAF) formed AZ91D magnesium alloy in semisolid state

2013 ◽  
Vol 17 (sup1) ◽  
pp. 16-20 ◽  
Author(s):  
H. Q. Ning ◽  
F. F. Peng ◽  
S. F. Zhu ◽  
Q. H. Hu ◽  
Z. R. Li ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Semisolid State ◽  
Az91d Magnesium Alloy ◽  
Coarsening Kinetics ◽  
Kinetics Of

Kinetics of Cr clustering in a Cu-Cr-Zr alloy processed by equal-channel angular pressing: A DSC study

2020 ◽  
Vol 686 ◽  
pp. 178550 ◽  
Author(s):  
Yousf Islem Bourezg ◽  
Khadidja Abib ◽  
Hiba Azzeddine ◽  
Djamel Bradai
Keyword(s):  
Equal Channel Angular Pressing ◽  
Angular Pressing ◽  
Kinetics Of ◽  
Zr Alloy

A Novel Process for Fabrication of Globular Structure by Equal Channel Angular Pressing and Isothermal Treatment of Semisolid Metal

2008 ◽  
Vol 141-143 ◽  
pp. 445-450 ◽  
Author(s):  
H. Meidani ◽  
S. Hossein Nedjad ◽  
Mahmoud Nili-Ahmadabadi
Keyword(s):  
Equal Channel Angular Pressing ◽  
Microstructural Evolution ◽  
Microstructure Evolution ◽  
Isothermal Treatment ◽  
Semisolid State ◽  
Isothermal Heating ◽  
Globular Structure ◽  
Globular Microstructure ◽  
Angular Pressing ◽  
New Process

A new process for fabrication of semisolid billets is introduced, which involves equal channel angular pressing and isothermal heating in the semisolid state. The process leads to a relatively fine globular microstructure. The microstructure evolution during isothermal treatment is studied and it is shown that dendrites breaking up has happened during equal channel angular pressing in semisolid state. The microstructural evolution during isothermal heating and the mechanism for the formation of the globular structure is tried to be understood and also modeled.

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