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Laser Shock Forming of Thin Film Fe78Si9B13 Metallic Glass
LIN Lejia 1 #,JI Zhong 2 *,REN Zhenfeng 2,ZHENG Chao 2,LIU Ren 2
1.Key Laboratory for Liquid-Solid Structural Evolution & Processing of Materials (MOE), School of Materials Science and Engineering, Shandong University
2.Key Laboratory for Liquid-Solid Structural Evolution & Processing of Materials (MOE), School of Materials Science and Engineering, Shandong University, 17923 Jingshi Road, Jinan 250061
*Correspondence author
#Submitted by
Subject:
Funding: the Natural Science Foundation of Shandong Province （No.No.Y2007F55）, the National Natural Science Foundation of China （No.No.50775131）
Opened online:25 March 2011
Accepted by: none
Citation: LIN Lejia,JI Zhong,REN Zhenfeng.Laser Shock Forming of Thin Film Fe78Si9B13 Metallic Glass[OL]. [25 March 2011] http://en.paper.edu.cn/en_releasepaper/content/4415843
 
 
Laser shock forming (LSF) is a high strain rate plastic forming technology, which applies high-amplitude shock wave pressure induced by pulsed laser irradiation to form microparts or to adjust finished shapes. It has been extensively used for the forming of aluminum, copper and other ductile sheet metals. For metallic glasses, laser shock forming is more difficult to be implemented because amorphous alloys exhibit little macroscopic plasticity at room temperature especially under uniaxial compressive, high strain rate, or tensile conditions. In this paper, Fe78Si9B13 metallic glass films with a thickness of 0.03 mm are used for laser shock forming. Structural changes of the glass film before and after laser shock forming are studied by X-ray diffraction (XRD), the X-ray diffraction curves show that no crystallization is observed when the films were subjected to laser shock forming. Besides, the bending angles caused by laser shocks are investigated under the microscope, which show that the bending angle increases with the increase of the number of laser shocks and with the increase of the overlapping rate of laser spots, but the rate of increase decreases gradually. Moreover, large plastic bending deformation of Fe78Si9B13 metallic glass films has been achieved by laser shock.
Keywords:Optoelectronics and laser technology;Laser shock forming;Bending;Fe78Si9B13
 
 
 

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