Browsing by Subject "Thixotropy"
Now showing items 19 of 9

Article
On the early breakdown of semisolid suspensions
(2007)Semisolid materials are suspensions of metal alloys which are processed while in a mushy state. In this state, the suspensions behave as viscoplastic materials with timedependent material properties. During processing, ...

Article
On the modeling of semisolid suspensions
(2008)Due to the distinct rheology of semisolid slurries the process has well established advantages over competing nearnetshape manufacturing technologies. Despite the obvious advantages of the process its adoption by the ...

Article
Parameter estimation for semisolid aluminum alloys using transient experiments
(2006)A rotating vanecup rheometer is used to determine the rheological properties of semisolid slurries, and a procedure is established for characterizing the rheology with emphasis given to the proper and selfconsistent ...

Article
Predictions of structure breakdown, buildup and shear banding in semisolid suspensions
(2008)When SSM material is subjected to a sudden transient the rate of buildup (aging) is negligible compared to the rate of breakdown (shear rejuvenation). While this is generally true, due to prolonged processing or the geometry ...

Article
Shear rejuvenation, aging and shear banding in yield stress fluids
(2009)The purpose of this work is to simulate shear rejuvenation and aging effects in shear thinning yield stress fluids in a typical rotational rheometer and to provide a common framework to describe the behavior of yield stress ...

Article
Squeeze flow of semisolid slurries
(2013)A standard method used to determine material properties of semisolid slurries is the squeeze flow experiment

Article
Squeeze flow of thixotropic semisolid slurries
(2014)An essential element for the integration of a semisolid process in the production of complex commercial components is the availability of accurate mathematical and computational tools that could describe both the rheological ...

Article
Thixotropic flow past a cylinder
(2014)We study the flow of a thixotropic fluid around a cylinder. The rheology of the fluid is described by means of a structural viscoplastic model based on the Bingham constitutive equation, regularised using the Papanastasiou ...

Conference Object
Thixotropy of semisolid metals
(Materials Research Society, 2000)Understanding the timedependent flow behavior of metal alloys in semisolid state is essential for the further development of the process. In the present investigation, the thixotropic behavior of semisolid slurries is ...