ISSN:
1573-4803
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract Rapidly solidified Al-Be binary alloys (10%, 20%, and 40%, Be by weight) have been produced by melt-spinning techniques. The microstructures have been evaluated and the elevated temperature mechanical properties have been characterized over a range of strain rates. Despite the fact that the materials exhibited duplex microstructures resulting from high-temperature processing, they showed behaviour typical of dispersion strengthened alloys. The mechanical properties at elevated temperature can accurately b8 described by the equation $$\dot \varepsilon = A(\sigma /E)^{12} $$ exp (−120 kJ mol−1/RT), where $$\dot \varepsilon $$ is the deformation rate,σ is the stress,E is the modulus,A is 8 material constant, andRT has its usual meaning. A direct comparison of the deformation properties was made between binary Al-Be composition and pure aluminium as baseline, as well as between Al-Be and some high temperature aluminium alloys. The Al-Be alloys do not exhibit good high-temperature strength when compared with other high-temperature aluminium alloys, e.g. Al-Fe-Co alloys. This is a result of particle coarsening and agglomeration during processing and testing.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01132039
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