期刊
JOURNAL OF MANUFACTURING PROCESSES
卷 32, 期 -, 页码 93-99出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jmapro.2018.01.027
关键词
Bulk metallic glass; Electron beam welding; Weld zone; Heat affected zone
资金
- Key Research and Development Plan of Anhui Province [1704a0902056]
- National Natural Science Foundation of China [51704001]
- Open Fund of State Key Laboratory of Advanced Welding and Joining [AWJ-16-M04, AWJ-16-Z02]
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 (T-g) and crystallization temperature (T-x) 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. (C) 2018 The Society of Manufacturing Engineers. Published by Elsevier Ltd. All rights reserved.
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