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Creep behaviour of short fibre reinforced QE22 magnesium alloy using impression creep test

Azeem, MA and Kumar, AK and Mondal, S (2005) Creep behaviour of short fibre reinforced QE22 magnesium alloy using impression creep test. In: 4th Conference on Creep, Fatique and Creep-Fatique Internation, OCT 08-10, 2003, Kalpakkam, INDIA.

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Abstract

Creep properties of QE22 magnesium based alloy and composites reinforced with 20 volume percent of short-fibers - Maftech (R), Saffil (R) or Supertech (R), were evaluated using the impression creep test. In the impression creep test, a load is applied with the help of a cylindrical tungsten carbide indenter of 1 mm diameter. This has advantages over conventional creep testing in terms of small specimen size requirement and simple machining. Depth of impression is recorded with time and steady state strain rate is obtained from the slope of the secondary strain (depth of impression divided by indenter diameter) vs. time plot. The results are compared with the creep obtained from conventional creep performed in tension on the same materials earlier. Microstructural examination of the plastically deformed regions is carried out to explain creep behaviour of these composites.

Item Type: Conference Paper
Additional Information: Copyright of this article belongs to Indian Institute of Metals.
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 08 Mar 2012 07:43
Last Modified: 08 Mar 2012 07:43
URI: http://eprints.iisc.ernet.in/id/eprint/43758

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