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罗良,杨晓京.单晶锗纳米切削温度场分布及各项异性对切削温度的影响研究[J].稀有金属材料与工程(英文),2019,48(4):1130~1134.[Luo Liang and Yang Xiaojing.Nano-cutting temperature field distribution and the influence of anisotropy on cutting temperature of single crystal germanium[J].Rare Metal Materials and Engineering,2019,48(4):1130~1134.]
Nano-cutting temperature field distribution and the influence of anisotropy on cutting temperature of single crystal germanium
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Received:October 05, 2018  Revised:October 26, 2018
DOI:
Key words: single crystal germanium  anisotropy  molecular dynamics  cutting temperature  cutting force
Foundation item:国家自然科学基金资助(项目号51765027,51365021)
Author NameAffiliation
Luo Liang and Yang Xiaojing  
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Abstract:
      In order to understand the nano-cutting properties of single crystal germanium and improve the optical surface quality of nano-germanium devices, the three-dimensional molecular dynamics (MD) method was firstly applied to investigate the temperature distribution of the material atoms during the nano-cutting process of single crystal germanium. The anisotropy effect of Ge (100)、(110)、(111) on the cutting temperature and the influence of cutting temperature on cutting force were investigated. It was found that the highest cutting temperature during the cutting process was distributed among the chips, reaching 460K. there is also a high temperature region in the friction zone of the tool back face, the highest temperature is above 400K. Among the three different crystal planes, Ge (111) has the highest cutting temperature, because the atoms between different crystal faces have different spatial structures. Ge (111) has the highest atomic density, namely, Ge(111) is the densely packed surface of the single crystal germanium, which releases the most energy. What’s more, cutting temperature has also played an impact on the cutting force, As the cutting temperature increases, the cutting force of the material atoms will be reduced.