Effect of annealing and cobalt content on relaxation and crystallization behavior of zirconium based bulk metallic glasses

Effect of annealing and cobalt content on relaxation and crystallization behavior of zirconium based bulk metallic glasses

The effects of annealing and cobalt content on relaxation and the crystallization process of Zr64Ni10Al7Cu19 bulk metallic glasses were investigated. β-relaxation occurs during annealing, leading to increased endotherm before crystallization. α-relaxation during high temperature annealing (higher th...

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Main Authors: Dong Yue, Wunderlich Rainer, Fecht Hans-Jörg
Format: Article
Language:English
Published: EDP Sciences 2017-01-01
Series:EPJ Web of Conferences
Online Access:https://doi.org/10.1051/epjconf/201715107001
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spelling doaj-89e216981e4d4d4c9f8f4833f6efed962021-08-02T05:56:19ZengEDP SciencesEPJ Web of Conferences2100-014X2017-01-011510700110.1051/epjconf/201715107001epjconf_lam2017_07001Effect of annealing and cobalt content on relaxation and crystallization behavior of zirconium based bulk metallic glassesDong Yue0Wunderlich Rainer1Fecht Hans-Jörg2Institute of Micro and Nanomaterials, University of UlmInstitute of Micro and Nanomaterials, University of UlmInstitute of Micro and Nanomaterials, University of UlmThe effects of annealing and cobalt content on relaxation and the crystallization process of Zr64Ni10Al7Cu19 bulk metallic glasses were investigated. β-relaxation occurs during annealing, leading to increased endotherm before crystallization. α-relaxation during high temperature annealing (higher than Tg) affects the crystallization process. The introduction of cobalt leads to an inhomogeneous amorphous structure and two-step crystallization due to the positive mixing enthalpy between cobalt and copper. Non-affine thermal strain arising from low temperature annealing of heterogeneous structure leads to a reduced endotherm phenomenon during relaxation on the DSC curves and a reduction in hardness.https://doi.org/10.1051/epjconf/201715107001
collection DOAJ
language English
format Article
sources DOAJ
author Dong Yue
Wunderlich Rainer
Fecht Hans-Jörg
spellingShingle Dong Yue
Wunderlich Rainer
Fecht Hans-Jörg
Effect of annealing and cobalt content on relaxation and crystallization behavior of zirconium based bulk metallic glasses
EPJ Web of Conferences
author_facet Dong Yue
Wunderlich Rainer
Fecht Hans-Jörg
author_sort Dong Yue
title Effect of annealing and cobalt content on relaxation and crystallization behavior of zirconium based bulk metallic glasses
title_short Effect of annealing and cobalt content on relaxation and crystallization behavior of zirconium based bulk metallic glasses
title_full Effect of annealing and cobalt content on relaxation and crystallization behavior of zirconium based bulk metallic glasses
title_fullStr Effect of annealing and cobalt content on relaxation and crystallization behavior of zirconium based bulk metallic glasses
title_full_unstemmed Effect of annealing and cobalt content on relaxation and crystallization behavior of zirconium based bulk metallic glasses
title_sort effect of annealing and cobalt content on relaxation and crystallization behavior of zirconium based bulk metallic glasses
publisher EDP Sciences
series EPJ Web of Conferences
issn 2100-014X
publishDate 2017-01-01
description The effects of annealing and cobalt content on relaxation and the crystallization process of Zr64Ni10Al7Cu19 bulk metallic glasses were investigated. β-relaxation occurs during annealing, leading to increased endotherm before crystallization. α-relaxation during high temperature annealing (higher than Tg) affects the crystallization process. The introduction of cobalt leads to an inhomogeneous amorphous structure and two-step crystallization due to the positive mixing enthalpy between cobalt and copper. Non-affine thermal strain arising from low temperature annealing of heterogeneous structure leads to a reduced endotherm phenomenon during relaxation on the DSC curves and a reduction in hardness.
url https://doi.org/10.1051/epjconf/201715107001
work_keys_str_mv AT dongyue effectofannealingandcobaltcontentonrelaxationandcrystallizationbehaviorofzirconiumbasedbulkmetallicglasses
AT wunderlichrainer effectofannealingandcobaltcontentonrelaxationandcrystallizationbehaviorofzirconiumbasedbulkmetallicglasses
AT fechthansjorg effectofannealingandcobaltcontentonrelaxationandcrystallizationbehaviorofzirconiumbasedbulkmetallicglasses
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