Spall damage of a Ta particle-reinforced metallic glass matrix composite under high strain rate loading
- South China Univ. of Technology, Guangzhou (China). Dept. of Engineering Mechanics; Southwest Jiaotong Univ., Chengdu (China). Key Lab. of Advanced Technologies of Materials, Ministry of Education; The Peac Inst. of Multiscale Sciences, Chengdu (China)
- Southwest Jiaotong Univ., Chengdu (China). Key Lab. of Advanced Technologies of Materials, Ministry of Education; The Peac Inst. of Multiscale Sciences, Chengdu (China)
- Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
- South China Univ. of Technology, Guangzhou (China). Dept. of Engineering Mechanics
We investigate deformation and damage of a Zr-based bulk metallic glass (BMG) and its Ta particle-reinforced composite (MGMC) under impact loading, as well as quasi-static tension for comparison. Yield strength, spall strength, and damage accumulation rate are obtained from free-surface velocity histories, and MGMC appears to be more damage-resistant. Scanning electron microscopy, electron back scattering diffraction and x-ray computed tomography, are utilized for characterizing microstructures, which show features consistent with macroscopic measurements. Different damage and fracture modes are observed for BMG and MGMC. Multiple well-defined spall planes are observed in BMG, while isolated and scattered cracking around reinforced particles dominates fracture of MGMC. Particle–matrix interface serves as the source and barrier to crack nucleation and propagation under both quasi-static and impact loading. Finally, deformation twinning and grain refinement play a key role in plastic deformation during shock loading but not in quasi-static loading. In addition, 3D cup-cone structures are resolved in BMG, but not in MGMC due to its heterogeneous stress field.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC); National Key Research and Development Program of China
- Grant/Contract Number:
- AC02-06CH11357; 2017YFB0702002; 11627901; 11372113; 11472100; 11672110
- OSTI ID:
- 1438249
- Alternate ID(s):
- OSTI ID: 1549033
- Journal Information:
- Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing, Vol. 711, Issue C; ISSN 0921-5093
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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