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Chin. Phys. B, 2012, Vol. 21(5): 056101    DOI: 10.1088/1674-1056/21/5/056101
CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES Prev   Next  

Fracture characteristics of bulk metallic glass under high speed impact

Sun Bao-Ru,Zhan Zai-Ji,Liang Bo,Zhang Rui-Jun,Wang Wen-Kui
State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
Abstract  High speed impact experiments of rectangular plate-shaped Zr41Ti14Cu12.5Ni10Be22.5 bulk metallic glass (BMG) were performed using a two-stage light gas gun. Under spherical shock waves with impact velocities ranging from 0.503 km/s to 4.917 km/s, obvious traces of laminated spallation at the back (free) surface and melting (liquid droplets) at the impact point were observed. The angles about 0?, 17?, 36?, and 90? to the shocking direction were shown in the internal samples because of the interaction between the compressive shock waves and the rarefaction waves. The compressive normal stress was found to induce the consequent temperature rise in the core of the shear band.
Keywords:  bulk metallic glass      shock wave      shear cracks/bands  
Received:  31 May 2011      Revised:  27 April 2012      Published:  01 April 2012
PACS:  61.43.Dq (Amorphous semiconductors, metals, and alloys)  
  62.20.M- (Structural failure of materials)  
  62.50.-p (High-pressure effects in solids and liquids)  
Fund: Project supported by the National Basic Research Program of China (Grant No. 2010CB731600).

Cite this article: 

Sun Bao-Ru,Zhan Zai-Ji,Liang Bo,Zhang Rui-Jun,Wang Wen-Kui Fracture characteristics of bulk metallic glass under high speed impact 2012 Chin. Phys. B 21 056101

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