Toughening a bulk metallic glass through mode II fracture under mode I loading
Source abstract
Abstract
High fracture toughness is vital for resisting catastrophic fracture of engineering structural materials which break through cavitation instability. We report a new toughening mechanism which totally suppressed cavitation through pure mode II fracture which was induced by pivoting around circular arc shear bands in a bulk metallic glass under mode I loading. We demonstrated that the mode II crack propagated along the outmost circular arc shear band along Prandtl slip line which is the orientation of maximum shear stress ahead of crack tip. Our theoretical investigation revealed that enhanced critical hydrostatic tension for cavitation which changed the stress field ahead of fatigue crack tip would be the trigger for pivoting which would increase energy dissipation and prevent hydrostatic tension ahead of crack tip from increasing. The present work would assist in guiding microstructure design to produce monolithic and composite materials with enhanced fracture toughness.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Metallic Glasses and Amorphous Alloys · Advanced Surface Polishing Techniques · Microstructure and mechanical properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (44)
Show source-provided references
1. Knott · 1973
2. Anderson · 2005
3. On the fracture toughness of advanced materials10.1002/adma.200803322 ↗
4. The conflicts between strength and toughness10.1038/nmat3115 ↗
5. Perspective on the development of high-toughness ceramics10.1111/j.1151-2916.1990.tb06493.x ↗
6. Design and fabrication of highly stretchable and tough hydrogels10.1080/15583724.2019.1691590 ↗
7. Biological materials: functional adaptations and bioinspired designs10.1016/j.pmatsci.2012.03.001 ↗
8. A damage-tolerant glass10.1038/nmat2930 ↗
9. Crack-resistance curve of a Zr–Ti–Cu–Al bulk metallic glass with extraordinary fracture toughness10.1016/j.actamat.2012.05.028 ↗
10. Cavitation-induced fracture causes nanocorrugations in brittle metallic glasses10.1103/PhysRevLett.117.044302 ↗
11. Intrinsic plasticity or brittleness of metallic glasses10.1080/09500830500080474 ↗
12. Transformation-mediated ductility in CuZr-based bulk metallic glasses10.1038/nmat2767 ↗
13. Designing metallic glass matrix composites with high toughness and tensile ductility10.1038/nature06598 ↗
14. Linking macroscopic rejuvenation to nano-elastic fluctuations in a metallic glass10.1016/j.actamat.2017.07.043 ↗
15. Nanoscale structural evolution and anomalous mechanical response of nanoglasses by cryogenic thermal cycling10.1021/acs.nanolett.8b01007 ↗
16. Strain-hardening and suppression of shear-banding in rejuvenated bulk metallic glass10.1038/s41586-020-2016-3 ↗
17. Xu · 2016 · 451
18. Configuration energies of the D-block elements10.1021/ja9928677 ↗
19. A novel FeNi-based bulk metallic glass with high notch toughness over 70 MPa⋅m1/2 combined with excellent soft magnetic properties10.1016/j.matdes.2020.108597 ↗
20. Locating bulk metallic glasses with high fracture toughness: chemical effects and composition optimization10.1016/j.actamat.2010.09.025 ↗
21. Effects of annealing and changes in stress state on fracture toughness of bulk metallic glass10.2320/matertrans.42.633 ↗
22. The mechanism of fracture in glassy materials capable of some inelastic deformation10.1016/0025-5416(76)90198-1 ↗
23. A path independent integral and the approximate analysis of strain concentration by notches and cracks10.1115/1.3601206 ↗
24. Study of the sensitivity of the mode I/III notch toughness of Zr41.2Ti13.8Cu10Ni12.5Be22.5 metallic glass to the loading rate under impact loading
25. Mechanics and mechanisms of large-scale brittle fracture in structural metals10.1016/0025-5416(71)90058-9 ↗
26. Fracture toughness of freestanding copper films with a thickness of 39 nm10.1016/j.engfracmech.2018.08.019 ↗
27. Crack deflection at an interface between dissimilar elastic materials10.1016/0020-7683(89)90021-8 ↗
28. Overcoming the brittleness of glass through bio-inspiration and micro-architecture10.1038/ncomms4166 ↗
29. Strain-dependent shear-band structure in a Zr-based bulk metallic glass10.1016/j.scriptamat.2020.08.030 ↗
30. Fracture of brittle metallic glasses: brittleness or plasticity10.1103/PhysRevLett.94.125510 ↗
31. Nanoscale periodic morphologies on the fracture surface of brittle metallic glasses10.1103/PhysRevLett.98.235501 ↗
32. Fracture behaviors under pure shear loading in bulk metallic glasses10.1038/srep39522 ↗
33. Mode II fracture behavior of a Zr-based bulk metallic glass10.1016/j.jmps.2006.05.003 ↗
34. Mode III fracture toughness of the Zr61Ti2Cu25Al12 bulk metallic glass10.1016/j.actamat.2016.02.063 ↗
35. Elastic field equations for blunt cracks with reference to stress corrosion cracking10.1007/BF00182890 ↗
36. Hosford · 2005
37. Fracture toughness of metallic glasses: annealing-induced embrittlement10.1103/PhysRevLett.109.194301 ↗
38. Hill · 1950
39. Invariant critical stress for shear banding in a bulk metallic glass10.1063/1.3048869 ↗
40. Calculations on the bending of rigid/plastic notched bars10.1016/0022-5096(68)90029-X ↗
41. Locating malleable bulk metallic glasses in Zr–Ti–Cu–Al alloys with calorimetric glass transition temperature as an indicator10.1016/S1005-0302(12)60180-7 ↗
42. Dynamic response of a Pd40Ni40P20 bulk metallic glass in tension10.1016/S1359-6462(01)01193-9 ↗
43. Deformation behavior of the Zr41.2Ti13.8Cu12.5Ni10Be22.5 bulk metallic glass over a wide range of strain-rates and temperatures10.1016/S1359-6454(03)00164-2 ↗
44. The elastic properties, elastic models and elastic perspectives of metallic glasses10.1016/j.pmatsci.2011.07.001 ↗