Microstructure Formation in Pb-30wt.%Bi Peritectic Alloy

Xiao Wu Hu; Hong Yan; Wen Jing Chen

doi:10.4028/www.scientific.net/AMR.236-238.1532

Paper Titles

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Mechanical Properties of SiC/Fe_xSi_y Composites
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Hydrodynamics Simulation of Gas-Solid Flow Field in Conveying Vessel
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Microstructure Formation in Pb-30wt.%Bi Peritectic Alloy
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Simulation Study of Gas-Solid Macro-Mixing Characterization in Small Fixed-Fluidized Bed Reactor
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Simultaneous Resolution of Clenbuterol Hydrochloride Enantiomers and Propranolol Hydrochloride Enantiomers using Thin-Layer Chromatography
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A Novel Formaldehyde-Free Adhesive from Jatropha Curcas Press-cake
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Experimental Study on Desulfurized Gypsum Modified Magnesium Oxychloride Cement
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Microstructure Formation in Pb-30wt.%Bi Peritectic Alloy

Abstract:

A rich variety of two-phase microstructures have been shown to form in the directionally solidified Pb-30wt.%Bi alloy. The selection of microstructure is shown to be depended upon the value of G/V (temperature gradient in the liquid divided by growth rate). The microstructure evolution is also discussed based on the competitive growth of different phase at various G/V ratios in directional solidification. Experimental results indicate that the primary a phase is the leading phase and grows with a dendritic/cellular microstructure while the peritectic b phase grows with cellular/planar microstructure in interdendritic/intercellular region at low G/V value. In contrast, competitive structures but not the discrete banded structure is present at high G/V ratio which makes the primary and secondary phase to grow with planar/cellular interface.