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Effects of quenched-in vacancies on the damping behaviour of Cu-11.9Al-2.5Mn shape memory alloy

✍ Scribed by Wang, Qingzhou ;Han, Fusheng ;Wang, Jinxiang ;Wang, Qiang

Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
202 KB
Volume
202
Category
Article
ISSN
0031-8965

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✦ Synopsis

Abstract

By internal friction technique, the behaviour of quenched‐in vacancies and their influence on the martensitic transformation of the Cu–11.9Al–2.5Mn alloy has been studied. It is found that the reverse martensitic transformation temperature T~p~ follows a non‐monotonous dependence on quenching temperature T~p~, of which the presence of a maximum T~p~ value is attributed to the different vacancy formation energies in the ordered and disordered phases. The background internal friction decreases with increasing ageing time due to migration of vacancies and resultant pinning effect on the phase interfaces and dislocations. (Β© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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Influence of heat treatment on the dampi
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✍ Wang, Qingzhou ;Han, Fusheng ;Hao, Gangling ;Wu, Jie πŸ“‚ Article πŸ“… 2006 πŸ› John Wiley and Sons 🌐 English βš– 469 KB

## Abstract The effect of heat treatment on the damping behaviour of a Cu–11.9Al–2.5Mn (wt%) alloy was investigated and correlated with the martensite microstructures. It is found that elevated quenching temperature and rapid cooling can give rise to increased damping capacity due to the formation