Title page for ETD etd-082305-102150

Document Type	thesis
Author Name	Bernard, III, William J.
URN	etd-082305-102150
Title	The Continuous Rheoconversion Process: Scale-up and Optimization
Degree	MS
Department	Materials Science & Engineering
Advisors	Diran Apelian, Advisor Richard D. Sisson, Jr., Department Head
Keywords	CRP thixocasting rheocasting semisolid
Date of Presentation/Defense	2005-08-04
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

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