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- Microstructure, segregation and fracture behavior of 6061 aluminum . . .
A serpentine channel pouring (SCP) process for efficiently preparing semi-solid 6061 aluminum alloy slurry and its rheological high pressure die casting (Rheo-HPDC) technology were introduced The microstructure, segregation and fracture behavior of 6061 aluminum alloy samples obtained via the traditional HPDC or Rheo-HPDC process were investigated and compared Furthermore, the effects of
- Examination of dendritic growth and microsegregation during . . .
Highlights • As the first attempt of modelling dendrite evolution in Al–Li binary alloy, our study successfully simulated the growth of dendrite by coupling KKS model with CALPHAD methodology • The growth morphology and segregation of single dendrite and columnar dendrites under different initial conditions was simulated • The model was validated by comparing solute distribution
- Dendrite Growth Characteristics and Segregation Control of Bearing . . .
The effects of rotational electromagnetic stirring (R-EMS) on dendrite growth characteristics and segregation control of bearing steel billet were investigated in continuous casting The results show that applying R-EMS can promote columnar-equiaxed transition, increase the region of the equiaxed grain from 5 % to 45 %, decrease the secondary dendrite arm spacing (SDAS), and reduce the
- Dendrite core grain refining and interdendritic coarsening behaviour in . . .
Two W-containing γ-TiAl based alloys were studied in as-cast ingot condition Pronounced partitioning of heavy-metals–light-metals were found to occur, causing segregation of W and Nb into dendrite core and Al in interdendritic region The average Al content in α 2 + γ lamellae was close to 46% in interdendritic region, and below 44% in dendrite cores, regardless of the nominal Al content
- Grain boundary amorphization as a strategy to mitigate lithium dendrite . . .
First, we have revealed the mechanism of lithium-ion segregation and dendrite growth caused by grain boundaries in solid-state electrolytes, from the microscopic to the mesoscopic scale, providing
- Dendritic Segregation of Zn-Al Eutectoid Alloys - MDPI
The structural investigations performed and described in this paper are focused on both the segregation phenomenon at the dendrite level, and on the external structure in the equilibrium state Qualitative and quantitative investigations of the Zn-Al eutectoid alloy (22% Al) structures in equilibrium and non-equilibrium states were considered and studied, revealing that, in this composition
- The effect of microscopic inclusion locations and silicon segregation . . .
The solidification of hypo-eutectic Al–Si alloys such as A356 begins with growth of primary Al alloy dendrites and Al–Si eutectic in between the dendrite arms [1] In castings where heat transfer is generally through the mold walls, the outer surface will have a high volume fraction of the α phase Al solid solution The volume fraction of the Al–Si eutectic content increases approaching
- Investigation of grain boundary segregation evolution and corrosion . . .
The segregation and aggregation of Cu and Li at the grain boundary seriously reduces the corrosion resistance of the FZ Li et al [29] also pointed out that the corrosion degree of aluminum alloys can be effectively improved by inhibiting the grain boundary segregation behavior of elements
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