In this paper, the ECAP process was applied to metallic powders in order to achieve both powder consolidation ... In the ECAP process for solid and powder metals, knowledge of the internal stress, strain and strain ... The properties of the ECAP processed solid and powder materials are strongly dependent on the shear plastic
a possibility of relating the powder densification response to microstructural characteristics of powder ... In this paper, we proposed a new powder agglomerate model in order to describe the unique densification ... The proposed model was applied to the densification of powder agglomerates during cold isostatic pressing
In this study, electrolytic copper powders were consolidated by high-pressure torsion process (HPT) ... After 10 turns, full densification was achieved by high pressure with shear deformation and ultrafine
Mechanically-alloyed NiAl powder was sintered by Spark-Plasma Sintering (SPS) process. ... Densification and behavior mechanical property were determined from the experimental results and analysis
Nanostructured metallic materials are synthesized by bottom-up processing which starts with powders ... In this study, the bottom-up powder and top-down SPD approaches were combined in order to achieve both ... For the powder consolidation, equal channel angular pressing (ECAP), one of the most promising method
This theoretical approach is useful for powder densification analysis of various powder sizes, deformation ... In the study, a hybrid constitutive model for densification of metallic powders was applied to cold ... routes and powder processing methods.
Densification of Cu-50%Cr Powder compacts by conventional Powder metallurgy Process has been studied. ... sintering are attributed to the anchoring effect of large Cr particles, which inhibits homogeneous densification
It is important to control and enhance the densification behavior of metal powders of aluminum. ... of aluminum powders was performed in order to develop a continuous production process. ... Investigation on the extrusion processing combined with equal channel angular pressing for densification
for densification modeling of the magnesium powders. ... The proposed densification model was implemented into the finite element code. ... order to investigate the densification and processing load at room temperature.
In this study, a model for densification of metallic powder is proposed for pure magnesium. ... The proposed densification model was implemented into the finite element method code. ... In order to obtain homogeneous and high quality products in powder compaction and powder forging processes
In this study, powder metallurgy and severe plastic deformation by high-pressure torsion (HPT) approaches ... Water-atomized pure iron powders were consolidated to disc-shaped samples at room temperature using HPT ... The water-atomized iron powders were deformed plastically as well as fully densified, as high as 99%
in-situ formation of CNTs on nano-sized Fe dispersed powders. ... In-situ processing route was adopted to disperse carbon nanotubes (CNTs) into powders homogeneously ... The composite powders with homogeneous dispersion of CNTs could be synthesized by a catalytic route for
For this study, various spherical Fe powders were prepared such as as-received, as-reduced, and as-oxidized ... Densification behavior was analyzed from the data of deflection along the pressure axis. ... It is known that SPS is very effective for the densification of hard-to-sinter materials like refractory
the higher amount of powder loading for molding than the simple mixture of W-Cu powder with an irregular ... , having the particle size similar to that of W powder. ... In this study, W-20wt%Cu powder mixture was prepared by ball-milling.
The numerical modeling of the powder process requires the appropriate constitutive model for densification ... densification behavior, especially for initial stage. ... of the powder materials.