Steady and unsteady state peritectic solidification

Autor(es)

Castanho, M. A. P. ^[1] ; Goulart, P. R. ^[2] ; Brito, C. ^[3] ; Spinelli, J. E. ^[4] ; Cheung, N. ^[3] ; Garcia, A. ^[3]

Afiliação do(s) autor(es)

^[1] Inst Technol Res IPT, BR-05508901 Sao Paulo - Brazil

^[2] Fed Inst Educ Sci & Technol Sao Paulo IFSP, BR-18202000 Itapetininga, SP - Brazil

^[3] Univ Estadual Campinas, Dept Mat Engn, BR-13083970 Campinas, SP - Brazil

^[4] Univ Fed Sao Carlos UFSCar, Dept Mat Engn, BR-13565905 Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: MATERIALS SCIENCE AND TECHNOLOGY; v. 31, n. 1, p. 105-114, JAN 2015.
• Citações Web of Science: 7

Resumo

In the present study, Pb-Bi as a model of alloys from peritectic systems was directionally solidified under transient heat flow conditions, which is the class of heat flow encompassing the majority of industrial solidification processes. Some experiments were also carried out in a vertical tube furnace under cooling rates closer to equilibrium during solidification in order to broaden the range of solidification parameters. Thermal parameters such as the tip growth rate (V-L) and the cooling rate (T) were experimentally determined and correlated with the primary (lambda(1)) and secondary (lambda(2)) dendrite arm spacings by experimental growth laws. It is shown that the proposed growth laws are able to encompass also the growth of dendritic branches during steady state growth from the melt. (AU)

• Processo FAPESP: 12/08494-0 - Parâmetros Térmicos e Microestruturais na Solidificação Transitória de Ligas Al-Mg e Al-Mg-Si e Correlação com Resistências Mecânica e à Corrosão
• Beneficiário: Crystopher Cardoso de Brito
• Modalidade de apoio: Bolsas no Brasil - Doutorado