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Descripción
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| FSP of as cast AA6061: *makes an effective surface modification; FSP closed the shrinkage porosity and homogenized the as-cast microstructures by breaking up and evenly dispersing initial phases. * the material plastic deformation, flow and mechanical mixing exhibit distinctly asymmetric characteristics at advancing, retreating side zones. * the hardness increasing of as-cast AA 6061 alloy by FSP depends on the process parameters, tool rotating and advancing speed, influencing the degree of grains refinement and level of uniformity in distribution of precipitation hardening phase, Mg2Si. FSP of AA6061- T4 *The material plastic deformation, flow and mechanical mixing exhibit distinctly asymmetric characteristics at advancing, and retreating side zones *The hardness loss of AA6061-T4 alloy depends on the process parameters, tool rotating and advancing speed; the width of this soft zone depends on peak temperature and thermal cycle duration. The material softening is due to dissolution or coarsening of Mg2Si phase precipitate during FSP. *The resulted wide heat affected zone and the lower material cooling rate produced the relatively low magnitude of compressive residual stresses in the processed zone. The compressive stresses can be beneficial for reducing the crack propagation speed. | |
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Internacional
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Si |
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Nombre congreso
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8TH INTERNATIONAL CONFERENCE ON TRENDS IN WELDING RESEARCH |
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Tipo de participación
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960 |
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Lugar del congreso
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PINE MOUNTAIN, GEORGIA (EE.UU.) |
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Revisores
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Si |
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ISBN o ISSN
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0000000000 |
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DOI
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Fecha inicio congreso
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01/06/2008 |
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Fecha fin congreso
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06/06/2008 |
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Desde la página
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1 |
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Hasta la página
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1 |
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Título de las actas
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TRANSPARENCIAS |