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Title: Spall damage of a Ta particle-reinforced metallic glass matrix composite under high strain rate loading

Journal Article · · Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing
 [1];  [1];  [2];  [2];  [2];  [3];  [4];  [2]
  1. 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)
  2. Southwest Jiaotong Univ., Chengdu (China). Key Lab. of Advanced Technologies of Materials, Ministry of Education; The Peac Inst. of Multiscale Sciences, Chengdu (China)
  3. Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
  4. 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
Citation Metrics:
Cited by: 23 works
Citation information provided by
Web of Science

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Cited By (2)

A nanoscale study of the negative strain rate dependency of the strength of metallic glasses by molecular dynamics simulations journal January 2018
Void collapse and subsequent spallation in Cu 50 Zr 50 metallic glass under shock loading by molecular dynamics simulations journal June 2019

Figures / Tables (10)