Unraveling the discontinuous plastic flow of a Co-Cr-Fe-Ni-Mo multiprincipal-element alloy at deep cryogenic temperatures
Journal Article
·
· Physical Review Materials
- Pohang Univ. of Science and Technology (POSTECH) (Korea, Republic of)
- National Academy of Sciences of Ukraine (NASU), Kharkov (Ukraine)
- Monash Univ., Melbourne, VIC (Australia); Univ. of Western Australia, Perth, WA (Australia)
- Univ. of Tennessee, Knoxville, TN (United States)
- Univ. of Illinois at Urbana-Champaign, IL (United States)
We report an analysis of the discontinuous plastic flow of a multiprincipal-element alloy, Co17.5Cr12.5Fe55Ni10Mo5 (atomic percent, at. %), in the temperature range of 0.5–4.2 K showing serrated deformation curves. Using the analytical techniques, we studied the statistics of the stress drops associated with the unstable plastic flow. The analysis showed that the complexity and heterogeneity of a discontinuous plastic flow were reduced when the temperature was lowered. This behavior was associated with the effects of dynamic recovery and adiabatic heating on the dislocation-density evolution.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- AC05-00OR22725
- OSTI ID:
- 1813130
- Journal Information:
- Physical Review Materials, Journal Name: Physical Review Materials Journal Issue: 8 Vol. 5; ISSN 2475-9953
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
Alloys
Annealing
Chaos & nonlinear dynamics
Cold working
Cryogenics
Field emission & field-ion microscopy
Mechanical & acoustical properties
Mechanical deformation
Mechanical testing
Metals
Plastic deformation
Plasticity
Polycrystalline materials
Self-organized criticality
Solid solutions
Statistical methods
Stochastic processes & statistics
Temperature
Tension tests
Thermomechanical effects
Time series analysis
X-ray diffraction
Alloys
Annealing
Chaos & nonlinear dynamics
Cold working
Cryogenics
Field emission & field-ion microscopy
Mechanical & acoustical properties
Mechanical deformation
Mechanical testing
Metals
Plastic deformation
Plasticity
Polycrystalline materials
Self-organized criticality
Solid solutions
Statistical methods
Stochastic processes & statistics
Temperature
Tension tests
Thermomechanical effects
Time series analysis
X-ray diffraction