期刊
PHYSICAL REVIEW E
卷 96, 期 1, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevE.96.013004
关键词
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资金
- Vietnamese Government Scholarship Program [911]
- US Department of Energy, Office of Basic Energy Sciences, Materials Science and Engineering Division, through a subcontract from Oak Ridge National Laboratory [DE-AC05-00OR-22725]
The statistical-thermodynamic dislocation theory developed in previous papers is used here in an analysis of high-temperature deformation of aluminum and steel. Using physics-based parameters that we expect theoretically to be independent of strain rate and temperature, we are able to fit experimental stress-strain curves for three different strain rates and three different temperatures for each of these two materials. Our theoretical curves include yielding transitions at zero strain in agreement with experiment. We find that thermal softening effects are important even at the lowest temperatures and smallest strain rates.
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