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Study on Strain Rate Sensitivities of FCC Metals Based on Multi-Scale Analysis
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Kun QIN1, 2, Li-Ming YANG2, Shi-Sheng HU1
Chinese Journal of High Pressure Physics | 2009, 23(3) : 196 - 202
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收藏切换
Chinese Journal of High Pressure Physics | 2009, 23(3): 196-202
Study on Strain Rate Sensitivities of FCC Metals Based on Multi-Scale Analysis
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Kun QIN1, 2, Li-Ming YANG2, Shi-Sheng HU1
Affiliations
  • 1.CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China, Hefei 230027, China
  • 2.Mechanics and Materials Science Research Centre, Faculty of Engineering Ningbo University, Ningbo 315211, China
Published: 2009-06-15
Outline
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Dislocation theory and molecular dynamics simulation were used to investigate the effect of atom properties on the strain-rate sensitivity of FCC metals. A method to analyze such effect is proposed. The stress dependence on dislocation velocity is identified as the key of such study and is obtained via 2-D MD simulations on the motion of an individual dislocation in FCC metals. Combining the simulation results with Orowan's relationship, it is concluded that strain rate sensitivities of FCC metals are mainly dependent on their atomic mass rather than the interatomic potential. The order of strain rate sensitivities of five FCC metals obtained by multi-scale analysis is consistent with the experimental results available.

strain-rate sensitivity  /  dislocation theory  /  dislocation velocity  /  molecular dynamics simulation
秦焜, 杨黎明, 胡时胜. 基于多尺度分析的FCC金属应变率敏感性研究. 高压物理学报, 2009 , 23 (3) : 196 -202 .
Kun QIN, Li-Ming YANG, Shi-Sheng HU. Study on Strain Rate Sensitivities of FCC Metals Based on Multi-Scale Analysis[J]. Chinese Journal of High Pressure Physics, 2009 , 23 (3) : 196 -202 .
Appendix
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Year 2009 volume 23 Issue 3
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Article Info
  • Receive Date：2008-05-12
  • Online Date：2026-10-30
  • Published：2009-06-15
Article Data
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History
  • Received：2008-05-12
  • Revised：2008-10-13
Funding
Affiliations
    1.CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China, Hefei 230027, China
    2.Mechanics and Materials Science Research Centre, Faculty of Engineering Ningbo University, Ningbo 315211, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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