Snoek-type damping performance in strong and ductile high-entropy alloys
File(s)
Author(s)
Type
Journal Article
Abstract
Noise and mechanical vibrations not only cause damage to devices, but also present major public health hazards. High-damping alloys that eliminate noise and mechanical vibrations are therefore required. Yet, low operating temperatures and insufficient strength/ductility ratios in currently available high-damping alloys limit their applicability. Using the concept of high-entropy alloy (HEA), we present a class of high-damping materials. The design is based on refractory HEAs, solid-solutions doped with either 2.0 atomic % oxygen or nitrogen, (Ta0.5Nb0.5HfZrTi)98O2 and (Ta0.5Nb0.5HfZrTi)98N2. Via Snoek relaxation and ordered interstitial complexes mediated strain hardening, the damping capacity of these HEAs is as high as 0.030, and the damping peak reaches up to 800 K. The model HEAs also exhibit a high tensile yield strength of ~1400 MPa combined with a large ductility of ~20%. The high-temperature damping properties, together with superb mechanical properties make these HEAs attractive for applications where noise and vibrations must be reduced.
Date Issued
2020-06-01
Date Acceptance
2020-05-05
Citation
Science Advances, 2020, 6 (25), pp.1-8
ISSN
2375-2548
Publisher
American Association for the Advancement of Science
Start Page
1
End Page
8
Journal / Book Title
Science Advances
Volume
6
Issue
25
Copyright Statement
Copyright © 2020
The Authors, some
rights reserved;
exclusive licensee
American Association
for the Advancement
of Science. No claim to
original U.S.Government
Works. Distributed
under a Creative
Commons Attribution
NonCommercial
License 4.0 (CC BY-NC).
The Authors, some
rights reserved;
exclusive licensee
American Association
for the Advancement
of Science. No claim to
original U.S.Government
Works. Distributed
under a Creative
Commons Attribution
NonCommercial
License 4.0 (CC BY-NC).
License URL
Identifier
https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000542299800030&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=a2bf6146997ec60c407a63945d4e92bb
Subjects
BEHAVIOR
CAPACITY
DIFFUSION
HIGH-STRENGTH
MECHANICAL-PROPERTIES
MICROSTRUCTURE
Multidisciplinary Sciences
OXYGEN
RELAXATION
Science & Technology
Science & Technology - Other Topics
SHAPE-MEMORY
TEMPERATURE INTERNAL-FRICTION
Publication Status
Published
Article Number
ARTN eaba7802
Date Publish Online
2020-06-17