Worcester Polytechnic Institute Electronic Theses and Dissertations Collection

Title page for ETD etd-082305-102150


Document Typethesis
Author NameBernard, III, William J.
URNetd-082305-102150
TitleThe Continuous Rheoconversion Process: Scale-up and Optimization
DegreeMS
DepartmentMaterials Science & Engineering
Advisors
  • Diran Apelian, Advisor
  • Richard D. Sisson, Jr., Department Head
  • Keywords
  • CRP
  • thixocasting
  • rheocasting
  • semisolid
  • Date of Presentation/Defense2005-08-04
    Availability unrestricted

    Abstract

    Semi-solid metal (SSM) processing has emerged as a preferred manufacturing method due to the superior quality associated with semi-solid castings. In recent years, the driving force to reduce process cost has led to the development of a few rheocasting (also termed slurry-on-demand) processes. These include UBE’s New Rheocasting (NRC) process [1], Idra Prince’s Semi-Solid Rheocasting (SSR) process [2], and THT’s Sub-Liquidus Casting (SLC®) process [3]. A novel slurry-making SSM process developed at ACRC/MPI, termed the “Continuous Rheoconversion Process” (CRP), is a passive liquid mixing technique in which the nucleation and growth of the primary phase are controlled using a specially designed “reactor”. The reactor provides heat extraction, copious nucleation and forced convection during the initial stage of solidification, leading to the formation of thixotropic structures. In these studies, the critical issues/challenges to optimize the CRP for industrial applications have been addressed through validation experiments and pre-industrial trials.

    Files
  • wbernard.pdf

  • Browse by Author | Browse by Department | Search all available ETDs

    [WPI] [Library] [Home] [Top]

    Questions? Email etd-questions@wpi.edu
    Maintained by webmaster@wpi.edu