Dynamic fragmentation of a Zr-based metallic glass under various impact velocities
- PDF / 1,964,951 Bytes
- 12 Pages / 595.276 x 790.866 pts Page_size
- 37 Downloads / 189 Views
Dynamic fragmentation of a Zr-based metallic glass under various impact velocities Chuan Ting Wang1, Yong He1,*
, Cheng Ji2, Yuan He1, Lei Guo1, and Yuanpei Meng1
1
School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, People’s Republic of China 2 Beijing Special Electromechanical Research Institute, Beijing 100081, People’s Republic of China
Received: 16 July 2020
ABSTRACT
Accepted: 22 October 2020
The dynamic fragmentation of ZrCuNiAl bulk metallic glass (BMG) subjected to various impact velocities was investigated in argon atmosphere. The results demonstrated that the ZrCuNiAl metallic glass generated debris after impact. The cumulative mass distribution curves of ZrCuNiAl BMG samples after impact under various velocities were obtained; the results showed that the cumulative mass of BMG samples conforms to the Schuhmann power function distribution. The characteristic fragment size k governing the fragment distributions was determined by fracture toughness and expansion strain rate. The results demonstrated that characteristic fragment size decreases with an increase in impact velocity, which was well described by the model. A relationship between the cumulative mass distribution and the impact velocity of Zr55Cu30Ni5Al10 alloy was obtained based on energy principles. This formula is feasible to predict the cumulative mass distribution of Zr55Cu30Ni5Al10 alloy after impact under a wide velocity range.
Published online: 2 November 2020
Ó
Springer Science+Business
Media, LLC, part of Springer Nature 2020
Introduction Zr-based amorphous alloys possess unique mechanical properties, as well as self-sharpening properties during high-velocity penetration. It is one of the ideal materials for penetrator core, so it has attracted wide attention in the military field. When the zirconiumbased multifunctional energetic structural materials
(MESM) impact the target under high velocity, the material fractures produce tiny combustible fragments, which will react with oxygen in the air to generate combustion reaction [1, 2]. The reaction enthalpy of this kind of reaction is as high as 1078 J/mol; such energetic characteristic makes Zrbased amorphous alloy regarded as a novel group of MESM.
Handling Editor: Avinash Dongare.
Address correspondence to E-mail: [email protected]
https://doi.org/10.1007/s10853-020-05495-5
J Mater Sci (2021) 56:2900–2911
Recently, extensive studies have been conducted to investigate the energetic characteristic of Zr-based alloys [3, 4]. B. Aydelotte et al. [5] studied the crushing process of three types of MESM by using the expansion ring experiment and proved that the energy release reaction of MESM occurred after the crushing process. H. Ren et al. [6] studied the impact compression process of tungsten zirconium alloy with different proportions by using the split Hopkinson pressure bar (SHPB) platform and proposed that the impact reaction at low velocity was affected by the size of fragments after impact. Under the impact condition
Data Loading...
