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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2017-01-01
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Series: | EPJ Web of Conferences |
Online Access: | https://doi.org/10.1051/epjconf/201715107001 |
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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 |
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1721240741428068352 |