Title
Shock loading effect on the MHz-range amplitude-independent internal friction and elastic properties of the beta '(1) martensite phase in Cu-Al-Ni alloys Shock loading effect on the MHz-range amplitude-independent internal friction and elastic properties of the beta '(1) martensite phase in Cu-Al-Ni alloys
Author
Faculty/Department
Faculty of Applied Economics
Publication type
article
Publication
Berlin ,
Subject
Physics
Source (journal)
Physica status solidi: A: applied research. - Berlin
Volume/pages
191(2002) :1 , p. 33-41
ISSN
0031-8965
ISI
000175975600004
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
The internal friction spectrum at 5 MHz in the martensite beta'(1)-phase of CuAlNi alloys shows two prominent internal friction peaks at 270 and 170 K. Corresponding anomalies in the sound wave velocity-temperature dependence have been observed. Detailed analysis of the behaviour of the peaks in dependence on different levels of impact loading and gamma-irradiation points to dislocation-point defect interaction. It is assumed that grain boundary dislocations are responsible for the 270 K peak while lattice dislocation, existing within the martensite variants are responsible for the 170 K peak.
E-info
https://repository.uantwerpen.be/docman/iruaauth/bed20e/1568310.pdf
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