Electronic Resource
Springer
Czechoslovak journal of physics
40 (1990), S. 322-334
ISSN:
1572-9486
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract A single-phase Zn-0·25 wt. % Cd alloy was prepared with the mean grain sized¯≈ 1μm. Superplastic characteristics (A max=320% andm max〉0·4) were established at room temperature at the strain rates.ɛ≈10−4s−1. Because of the absence of any second phase particles the fine-grained structure was not stable and an intense grain coarsening was observed both during the long-term ageing and during straining at room temperature. The increasing temperature accelerated this grain coarsening and suppressed the superplastic behaviour. Nevertheless, the stress relaxation tests suggested that the superplastic behaviour might be expected at higher temperatures in coarser grained specimens, too, but at substantially lower strain rates.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01597757
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