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Title: | Remarkable improvement of damping capacity of Mn–20Cu–5Ni–2Fe (at%) alloy by zinc element addition | Authors: | Li, D Liu, W Li, N Yan, J Shi, S |
Issue Date: | Dec-2017 | Source: | Advanced engineering materials, Dec. 2017, v. 19, no. 12, 1700437 | Abstract: | In this paper, the effect of Zn element addition on martensitic transformation and damping capacity of Mn–20Cu–5Ni–2Fe (at%, M2052) alloy has been investigated systematically by using X-ray diffraction, optical microscopy, and dynamic mechanical analyzer. The results show that martensitic transformation and damping capacity have a crucial dependence on the addition of Zn element. It not only can markedly enhance the damping capacity of M2052 alloy at room temperature (internal friction Q−1 increases by ≈23% compared to M2052 without Zn as strain amplitude reaches 4 × 10−4), but also reduces the attenuation of damping capacity effectively at elevated temperatures. This is mainly because the addition of Zn element can evidently increase the Gibbs free energy difference between γ parent phase and γ' phase produced by face centered cubic to face centered tetragonal (f.c.c-f.c.t) phase transformation, and then raises the martensitic transformation and its reverse transformation temperatures, eventually leading to the apparent increase of amount of f.c.t γ' phase micro-twins as damping source and the significant enhancement of damping capacity. It will be of great value for design and optimization of high-performance M2052 damping alloy toward practical applications. | Keywords: | Damping capacity Gibbs free energy Lattice distortion Manganese-copper based alloys Martensitic transformation temperature |
Publisher: | Wiley-VCH Verlag GmbH & Co. KGaA | Journal: | Advanced engineering materials | ISSN: | 1438-1656 | EISSN: | 1527-2648 | DOI: | 10.1002/adem.201700437 | Rights: | © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim This is the peer reviewed version of the following article: Li, D., Liu, W., Li, N., Yan, J., & Shi, S. (2017). Remarkable improvement of damping capacity of Mn–20Cu–5Ni–2Fe (at%) alloy by zinc element addition. Advanced Engineering Materials, 19(12), 1700437, which has been published in final form at https://doi.org/10.1002/adem.201700437. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited. |
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