University of Oulu

Gang Wang, Yongjiang Huang, Wei Cao, Zhongjia Huang, Marko Huttula, Yongsheng Su, Caiwang Tan, Microstructure and crystallization mechanism of Ti-based bulk metallic glass by electron beam welding, Journal of Manufacturing Processes, Volume 32, 2018, Pages 93-99, ISSN 1526-6125,

Microstructure and crystallization mechanism of Ti-based bulk metallic glass by electron beam welding

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Author: Wang, Gang1,2; Huang, Yongjiang3; Cao, Wei2;
Organizations: 1School of Mechanical and Automotive Engineering, Anhui Polytechnic University, Wuhu 241000, PR China
2Nano and Molecular Systems Research Unit, University of Oulu, P.O. Box 3000, FIN-90014, Oulu, Finland
3State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, PR China
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 0.7 MB)
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Language: English
Published: Elsevier, 2018
Publish Date: 2020-02-06


In this work, we report on the successful welding of the Ti-based bulk metallic glass (BMG) plates via electron beam welding route. Microstructure determination shows that crystalline phases exist both in weld zone (WZ) and heat affected zone (HAZ). The critical cooling rate for glass formation in WZ is depended on the solidification condition. The continuous heating transformation curve (CHT) of glass transition temperature (Tg) and crystallization temperature (Tx) during heating process, time-temperature-transformation diagram (C-curve) during cooling process, and the thermal cycle curves are obtained by Kissinger equation, nucleation theory, and temperature field simulation, respectively. The crystallization mechanism in HAZ was discussed in details during the heating and cooling processes. The intersection between cooling curve and C-curve denotes the crystallization of HAZ during the cooling process.

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Series: Journal of manufacturing processes
ISSN: 1526-6125
ISSN-E: 2212-4616
ISSN-L: 1526-6125
Volume: 32
Pages: 93 - 99
DOI: 10.1016/j.jmapro.2018.01.027
Type of Publication: A1 Journal article – refereed
Field of Science: 216 Materials engineering
Funding: This work was supported by the Key Research and Development Plan of Anhui Province [Grant No. 1704a0902056], National Natural Science Foundation of China [Grant No. 51704001] and the Open Fund of State Key Laboratory of Advanced Welding and Joining [Grant Nos. AWJ-16-M04 and AWJ-16-Z02].
Copyright information: © 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license