• français
    • English
    français
  • Login
Help
View Item 
  •   Home
  • Laboratoire Procédés et Ingénierie en Mécanique et Matériaux (PIMM)
  • View Item
  • Home
  • Laboratoire Procédés et Ingénierie en Mécanique et Matériaux (PIMM)
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Does Shear Thickening Occur in Semisolid Metals?

Article dans une revue avec comité de lecture
Author
ATKINSON, H. V.
301006 Cranfield University
ccFAVIER, Véronique
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]

URI
http://hdl.handle.net/10985/15776
DOI
10.1007/s11661-015-3307-4
Date
2016
Journal
Metallurgical and Materials Transactions A

Abstract

In the various forms of semisolid processing such as thixoforming and thixoforging, the entry into the die occurs in a fraction of a second so it is the transient rheological behavior which governs the initial stages of flow. In experiments in the literature, this rheological behavior is probed through applying rapid transitions in shear rate under isothermal conditions. There is contradictory evidence as to whether the behavior during these transitions is shear thinning or shear thickening, although it is clear that once in the die the material is thinning. Here the data in the literature are reanalyzed to obtain a rationalization of the contradictions which has not previously been available. It is argued that if a suspension is initially in a disagglomerated state (i.e., one which is initially sheared), the instantaneous behavior with a jump-up in shear rate is shear thickening (even if the long-term steady-state behavior is shear thinning) provided the fraction solid is greater than about 0.36 and the final shear rate at the end of the jump is greater than about 100 s −1 . If the jump-up in shear rate is made from rest then yield masks the shear thickening.

Files in this item

Name:
PIMM_MMTA_2016_FAVIER.pdf
Size:
1004.Kb
Format:
PDF
View/Open

Collections

  • Laboratoire Procédés et Ingénierie en Mécanique et Matériaux (PIMM)

Related items

Showing items related by title, author, creator and subject.

  • Micromechanical modelling of the elastic-viscoplastic response of metallic alloys under rapid compression in the semi-solid state 
    Article dans une revue avec comité de lecture
    ATKINSON, H. V.; ccFAVIER, Véronique (Elsevier, 2011)
    Semi-solid processing is used commercially to produce a variety of components and it is therefore important to be able to model the die fill. Micromechanical modelling is one approach to this. Here we compare the micromechanical ...
  • Analysis of semi-solid response under rapid compression tests using multi-scale modelling and experiments 
    Article dans une revue avec comité de lecture
    ATKINSON, H. V.; ccFAVIER, Véronique (Elsevier, 2010)
    Simulating semi-solid metal forming requires modelling semi-solid behaviour. However, such modelling is difficult because semi-solid behavior is thixotropic and depends on the liquid-solid spatial distribution within the ...
  • Comparison between numerical simulation of semisolid flow into a die using FORGE© and in situ visualization using a transparent sided die 
    Article dans une revue avec comité de lecture
    NEAG, Adriana; ccFAVIER, Véronique; ccBIGOT, Regis; ATKINSON, Helen Valerie (Elsevier, 2016)
    Semi-solid processing is a promising forming process for shaping metallic alloys in one shot. Numerical simulations are of great interest for optimizing the process. Generally, numerical simulation results are compared ...
  • Calorimetric Studies and Self-Heating Measurements for a Dual-Phase Steel Under Ultrasonic Fatigue Loading 
    Chapitre d'ouvrage scientifique
    TORABIAN, Noushin; ZIAEI-RAD, Saeed; DIRRENBERGER, Justin; ADAMSKI, Frédéric; ccRANC, Nicolas; ccFAVIER, Véronique (ASTM International, 2016)
    The objective of the present research is to study the self-heating behavior of a dual-phase (DP) steel under ultrasonic fatigue loading and to investigate the effect of frequency on intrinsic heat dissipation of the material. ...
  • Modeling laser drilling in percussion regime using constraint natural element method 
    Article dans une revue avec comité de lecture
    ILLOUL, Lounès; LORONG, Philippe; ccRANC, Nicolas; ccSCHNEIDER, Matthieu; ccFAVIER, Véronique; ccGIRARDOT, Jeremie (Springer Verlag, 2017)
    The laser drilling process is the main process used in machining procedures on aeronautic engines, especially in the cooling parts. The industrial problematic is to reduce geometrical deviations of the holes and defects ...

Browse

All SAMCommunities & CollectionsAuthorsIssue DateCenter / InstitutionThis CollectionAuthorsIssue DateCenter / Institution

Newsletter

Latest newsletterPrevious newsletters

Statistics

Most Popular ItemsStatistics by CountryMost Popular Authors

ÉCOLE NATIONALE SUPERIEURE D'ARTS ET METIERS

  • Contact
  • Mentions légales

ÉCOLE NATIONALE SUPERIEURE D'ARTS ET METIERS

  • Contact
  • Mentions légales