Compression Creep at 240°C of Extruded Magnesium Alloys Containing Gadolinium

Abstract:

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For uses at high temperatures, magnesium alloys containing rare earths have proven to be very suitable. High proportions of melting precipitates contribute to strengthening, even at temperatures above 200°C. If these alloys are extruded, their creep resistance rises even further due to the resulting fine-grained structure. In this paper, magnesium alloys with 10% Gd and additional small amounts of La and Nd are compared with WE43 for compression creep at temperatures of 240°C and stresses between 80 and 150 MPa. The minimum creep rates are determined and the stress exponent evaluated in accordance with the Norton equation. By calculating the threshold stress, the true stress exponents are determined.

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Periodical:

Edited by:

Hajo Dieringa, Norbert Hort and Karl Ulrich Kainer

Pages:

270-273

DOI:

10.4028/www.scientific.net/MSF.690.270

Citation:

H. Dieringa et al., "Compression Creep at 240°C of Extruded Magnesium Alloys Containing Gadolinium", Materials Science Forum, Vol. 690, pp. 270-273, 2011

Online since:

June 2011

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Price:

$35.00

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