Effect of Pre-Rolling Reduction on Intergranular Corrosion of Aluminum Alloy 2519A

Abstract:

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The effect of pre-rolling reduction prior to ageing on the size and distribution of the precipitates, the width of precipitation free zones (PFZ) along grain boundaries and intergranular corrosion (IGC) of aluminum alloy 2519A were investigated by hardness tests, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The experimental results showed that the time for peak-age shortened when the reduction increased, which resulted in refining the precipitatates and distributing homogeneously within the grains and hence the IGC decreased. With increasing pre-rolling reduction, the PFZ along grain boundaries became narrower and precipitates changed from continuous chains to discrete distribution, which resulted in high IGC resistance.

Info:

Periodical:

Materials Science Forum (Volumes 546-549)

Edited by:

Yafang Han et al.

Pages:

1117-1122

DOI:

10.4028/www.scientific.net/MSF.546-549.1117

Citation:

Y. Liu et al., "Effect of Pre-Rolling Reduction on Intergranular Corrosion of Aluminum Alloy 2519A", Materials Science Forum, Vols. 546-549, pp. 1117-1122, 2007

Online since:

May 2007

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Price:

$35.00

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