Elevated-temperature creep of high-entropy alloys via nanoindentation

High-entropy alloys (HEAs) have been the focus of wide-ranging studies for their applications as next-generation structural materials. For high-temperature industrial applications, creep behavior of structural materials is critical. In addition to high-temperature tensile, compressive, and notched t...

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Veröffentlicht in:MRS bulletin 2019-11, Vol.44 (11), p.860-866
Hauptverfasser: Lin, P.H., Chou, H.S., Huang, J.C., Chuang, W.S., Jang, J.S.C., Nieh, T.G.
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container_end_page 866
container_issue 11
container_start_page 860
container_title MRS bulletin
container_volume 44
creator Lin, P.H.
Chou, H.S.
Huang, J.C.
Chuang, W.S.
Jang, J.S.C.
Nieh, T.G.
description High-entropy alloys (HEAs) have been the focus of wide-ranging studies for their applications as next-generation structural materials. For high-temperature industrial applications, creep behavior of structural materials is critical. In addition to high-temperature tensile, compressive, and notched tests, elevated-temperature nanoindentation is a relatively new testing method for HEAs. With the high accuracy of depth-sensing technology and a stable temperature-controlling stage, elevated-temperature time-dependent mechanical behavior of HEAs can be investigated, especially at localized regions without the limitations of the standard specimen size used for traditional creep testing. Also, the creep response from each grain in polycrystalline samples with various crystalline orientations can be explored in detail. This article overviews current progress in studying creep behavior in HEAs via nanoindentation technology.
doi_str_mv 10.1557/mrs.2019.258
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subjects Alloys
Applied and Technical Physics
Characterization and Evaluation of Materials
Creep tests
Energy Materials
Entropy
High entropy alloys
High temperature
High-Temperature Materials for Structural Applications
Industrial applications
Materials Engineering
Materials Science
Mechanical properties
Metals
Microelectromechanical systems
Nanoindentation
Nanotechnology
Residual stress
Temperature
Temperature dependence
Thin films
Time dependence
title Elevated-temperature creep of high-entropy alloys via nanoindentation
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