Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/89402
Type: Artigo de evento
Title: Unsteady-state Directional Solidification Of A Hypoperitectic Pb-9.5wt%bi Alloy
Author: Castanho M.A.P.
Goulart P.R.
Cheung N.
Garcia A.
Abstract: Although considerable attention has been paid to studies on the unidirectional solidification of peritectic alloys, most of these investigations are carried out under steady-state solidification, where both the growth rate and the thermal gradient can be independently controlled and held constant in time. In this work, a hypoperitectic Pb-9.5wt%Bi alloy was directionally solidified under unsteady-state heat flow conditions and the microstructure evolution was analyzed. Continuous temperature measurements in the casting were monitored during solidification, using a data acquisition system and a bank of six type J thermocouples positioned along the casting length. Thermal parameters such as the growth rate (v) and the cooling rate (Ṫ) were experimentally determined by the experimental cooling curves. The solidification microstructure was characterized by a dendritic morphology along the entire casting length. The primary (λ1) and secondary (λ2) dendrite arm spacings were measured and experimental growth laws relating them to the solidification thermal parameters v and Ṫ are proposed. © (2013) Trans Tech Publications, Switzerland.
Editor: 
Rights: fechado
Identifier DOI: 10.4028/www.scientific.net/MSF.730-732.889
Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-84870763389&partnerID=40&md5=dafa30801aa9bda0756b47d134ebb615
Date Issue: 2013
Appears in Collections:Unicamp - Artigos e Outros Documentos

Files in This Item:
There are no files associated with this item.


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.