中国物理B ›› 2012, Vol. 21 ›› Issue (5): 56101-056101.doi: 10.1088/1674-1056/21/5/056101

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Fracture characteristics of bulk metallic glass under high speed impact

孙宝茹,战再吉,梁波,张瑞军,王文魁   

  1. State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
  • 收稿日期:2011-05-31 修回日期:2012-04-27 出版日期:2012-04-01 发布日期:2012-04-01
  • 基金资助:
    Project supported by the National Basic Research Program of China (Grant No. 2010CB731600).

Fracture characteristics of bulk metallic glass under high speed impact

Sun Bao-Ru(孙宝茹), Zhan Zai-Ji(战再吉), Liang Bo(梁波), Zhang Rui-Jun(张瑞军), and Wang Wen-Kui(王文魁)   

  1. State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
  • Received:2011-05-31 Revised:2012-04-27 Online:2012-04-01 Published:2012-04-01
  • Supported by:
    Project supported by the National Basic Research Program of China (Grant No. 2010CB731600).

摘要: 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.

关键词: bulk metallic glass, shock wave, shear cracks/bands

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.

Key words: bulk metallic glass, shock wave, shear cracks/bands

中图分类号:  (Amorphous semiconductors, metals, and alloys)

  • 61.43.Dq
62.20.M- (Structural failure of materials) 62.50.-p (High-pressure effects in solids and liquids)