Processing time in superplastic forming for Zr55Cu30Al10Ni5 bulk metallic glass

被引：0
作者：
Yang, Fan [1 ]
Shi, Tielin [1 ]
Liao, Guanglan [1 ]
机构：
[1] State Key Laboratory of Digital Manufacturing Equipment and Technology, Huazhong University of Science and Technology, Wuhan
来源：
Huazhong Keji Daxue Xuebao (Ziran Kexue Ban)/Journal of Huazhong University of Science and Technology (Natural Science Edition) | 2015年 / 43卷 / 03期
关键词：
Annealing temperature; Bulk metallic glass; Double annealing; Heating rate; Processing time;
D O I：
10.13245/j.hust.150311
中图分类号：
学科分类号：
摘要：
The influential factors of the processing time in the superplastic forming for Zr55Cu30Al10Ni5 bulk metallic glass by the continuous heating and isothermal annealing differential scanning calorimetry (DSC) experiments were investigated. Three factors were investigated: the annealing temperature, heating rate and the times of the annealing processing. The annealing temperature showed a negative exponential relationship with the incubation time of Zr55Cu30Al10Ni5, and mainly determined the length of the allowed processing time. Increasing the heating rate could increase the incubation time a little, so as to extend the processing time. But when the annealing temperature went beyond the supercooled liquid region due to the increasing heating rate, incubation time would achieve the maximum. Lots of annealing proceedings could make the losses of the overall incubation time, which were related to the first annealing time. So moderately choosing the annealing temperature and the heating rate, scientifically arranging the processing sequence can help to optimize the processing time in superplastic forming of bulk metallic glasses and maintaining the amorphous characteristics of materials. ©, 2015, Huazhong University of Science and Technology. All right reserved.
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页码：54 / 57
页数：3
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