Influence of time evolution of particle shape on rheological behavior of semisolid slurries of magnesium alloy AZ91D

Li, Liang; Zheng, M.Y.

doi:10.1007/s12540-016-5546-3

Cited by 2 publications

(1 citation statement)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The remaining melting within the grain was from the entrapped liquid which was blocked within the solid phases during the semi-solid deformation. This phenomenon also appeared in other alloys during their semi-solid forming process [30][31][32]. The dendritic structures were eliminated and the microstructure was refined compared with as-cast state under these conditions.…”

Section: Effects Of Ldp On Dendrite Structurementioning

confidence: 78%

A Method Based on Semi-Solid Forming for Eliminating Coarse Dendrites and Shrinkage Porosity of H13 Tool Steel

Guo

Liu

Sun

et al. 2018

Metals

View full text Add to dashboard Cite

A method called forging solidifying metal (FSM), which is applied for eliminating coarse dendrites and shrinkage porosity defects of ferrous alloys was proposed based on semi-solid forming technology (SSF). To verify its feasibility, the effects of liquid fraction (F L) on the microstructure of the deformed H13 steel were investigated experimentally. The coarse dendrites structure still existed and cracks appeared when the 0.1/s 50% FSM method was carried out at~20% F L. What is significantly different from that is, the elimination of the coarse dendrites structure and shrinkage porosity defects became more significant, when this method was conducted at the end of solidification (F L < 10%). The microstructure of H13 steel was significantly refined and also became dense in such condition.

show abstract

Section: Effects Of Ldp On Dendrite Structurementioning

confidence: 78%

A Method Based on Semi-Solid Forming for Eliminating Coarse Dendrites and Shrinkage Porosity of H13 Tool Steel

Guo

Liu

Sun

et al. 2018

Metals

View full text Add to dashboard Cite

show abstract

Time evolution of agglomerate size of semisolid magnesium alloy AZ91D during a real isothermal shearing

Zheng

2017

International Journal of Materials Research

View full text Add to dashboard Cite

The present study attempts to discuss the time evolution of the slurry microstructure of semisolid magnesium alloy AZ91D so as to control the forming process more effectively. We calculated the instantaneous shear stress and the time evolution of average agglomerate size of a real isothermal shearing process containing increasing shear rate, holding the maximal shear rate and decreasing shear rate. The calculated results demonstrate that we should adopt as great a maximal shear rate as possible to achieve a finer slurry microstructure and reduce the resulting larger startup shear stress by increasing the time interval required to increase the shear rate to maximum. Moreover, we also should shorten the time interval required to decrease the shear rate to zero as far as possible, so as to weaken agglomeration during decreasing shear rate and achieve a better final slurry microstructure.

show abstract

Influence of time evolution of particle shape on rheological behavior of semisolid slurries of magnesium alloy AZ91D

Cited by 2 publications

References 12 publications

A Method Based on Semi-Solid Forming for Eliminating Coarse Dendrites and Shrinkage Porosity of H13 Tool Steel

A Method Based on Semi-Solid Forming for Eliminating Coarse Dendrites and Shrinkage Porosity of H13 Tool Steel

Time evolution of agglomerate size of semisolid magnesium alloy AZ91D during a real isothermal shearing

Contact Info

Product

Resources

About