Thermal Stability of Vacuum Hot Pressed Bulk Nanostructured Al-Cu Alloys

Abstract:

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Bulk nanostructured Al-4Cu alloy was synthesized by high energy ball milling followed by vacuum hot pressing. Its thermal stability was investigated up to 450°C using differential scanning calorimetry, X-ray diffraction, and transmission electron microscopy. The results showed that grain growth in this Al-4Cu alloy was very limited and grain sizes in the range of 100 nm were still present in the alloys after exposure to 450 °C corresponding to a temperature as high as 0.77 T/Tm. The TEM investigations reveal that such a high thermal stability against grain growth observed in this alloy is attributed to the presence of ultrafine dispersoids.

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Periodical:

Edited by:

Hajo Dieringa, Norbert Hort and Karl Ulrich Kainer

Pages:

234-237

DOI:

10.4028/www.scientific.net/MSF.690.234

Citation:

T. Shanmugasundaram et al., "Thermal Stability of Vacuum Hot Pressed Bulk Nanostructured Al-Cu Alloys", Materials Science Forum, Vol. 690, pp. 234-237, 2011

Online since:

June 2011

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$35.00

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