Influence of low-frequency vibrations on the compression behavior and microstructure of T2 copper
Influence of low-frequency vibrations on the compression behavior and microstructure of T2 copper
复制标题
低频振动对T2铜压缩行为和显微组织的影响
DOI:
10.1016/j.msea.2017.10.083
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发表时间:
2018-01
期刊:
影响因子:
--
通讯作者:
Li Jianjun
中科院分区:
文献类型:
--
作者:
Deng Lei;Li Pan;Wang Xinyun;Zhang Mao;Li Jianjun
In this study, the influence of low-frequency vibrations on the room-temperature compression behavior of T2 copper was experimentally investigated. Upon superposing a low-frequency vibration, the forming load noticeably reduced. Among the three vibration parameters investigated, viz. frequency, amplitude, and feeding rate, vibration amplitude plays the most important role in load reduction. The superposition of stress waves can explain the mechanism of forming load reduction at low-frequency vibrations. Due to an increase in the internal stress caused by the superposition of stress waves, the required forming load reduced. The influence of the vibrations on the microstructures of compressed specimens was also discussed. Under low-frequency vibration conditions, cyclic impact loading leads to an increase in the density of dislocations and the formation of dislocation cells, which gradually evolve into new grain boundaries, causing grain refinement.
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DOI:
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发表时间:
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影响因子:
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