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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
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| Abstract |
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| 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. | |
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English
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| Source (journal) |
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Physica status solidi: A: applied research. - Berlin |
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Berlin : 2002
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| ISSN |
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0031-8965
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191:1(2002), p. 33-41
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| ISI |
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000175975600004
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| Full text (publisher's version - intranet only) |
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