液氮冷却对铁基形状记忆合金车削加工性能的影响研究
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摘要
针对铁基形状记忆合金常规冷却切削条件下因材料自身相变点及热滞性所出现的表面加工质量差、超弹性性能受损、切削效率低等问题,研究液氮冷却对改善形状记忆合金性能的影响。设计液氮喷淋低温冷却车削Fe-Mn-Si-Cr-Ni-C系形状记忆合金试验,研究了液氮喷淋低温冷却、常规水基切削液冷却、干切削等不同冷却方式、不同工艺参数下切削振动以及表面粗糙度的变化特性,分析了不同冷却方式对切削表层微观组织结构的影响。结果表明,液氮冷却能较好地改善铁基形状记忆合金的切削性能及微观组织。
Aiming at the technical problems such as poor surface quality,hyper elastic property damage and low cutting efficiency in conventional cooling cutting of the Fe-based shape memory alloy,the effect of liquid nitrogen cooling on improving the properties of shape memory alloy is researched.A Fe-Mn-Si-Cr-Ni-C series shape memory alloy turning experiment which using the liquid nitrogen as the cooling lubricant is designed.The characteristics of cutting vibration and surface roughness variation under different process parameters and cooling modes,such as liquid nitrogen spray low-temperature cooling,conventional water-based cutting fluid cooling and dry cutting are studied.The result shows that the liquid nitrogen cooling method can significantly improve the cutting performance and microstructure of Fe-based shape memory alloy.
Aiming at the technical problems such as poor surface quality,hyper elastic property damage and low cutting efficiency in conventional cooling cutting of the Fe-based shape memory alloy,the effect of liquid nitrogen cooling on improving the properties of shape memory alloy is researched.A Fe-Mn-Si-Cr-Ni-C series shape memory alloy turning experiment which using the liquid nitrogen as the cooling lubricant is designed.The characteristics of cutting vibration and surface roughness variation under different process parameters and cooling modes,such as liquid nitrogen spray low-temperature cooling,conventional water-based cutting fluid cooling and dry cutting are studied.The result shows that the liquid nitrogen cooling method can significantly improve the cutting performance and microstructure of Fe-based shape memory alloy.
引文
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[2]李敏,黎厚斌.形状记忆材料研究综述[J].包装学报,2014(4):17-23.
[3]Yang J H,Chen H,Wayman C M.Development of Fe-based shape memory alloys associated with face-centered cubic-hexagonal close-packed martensitic transformations:Part Ⅱ.transformation behavior[J].Metallurgical Transactions A,1992,23(5):1439-1444.
[4]周迎春,田延军,冯世宏,等.FeMnSiCr铁基形状记忆合金管接头耐腐蚀抗氧化性能的研究[J].金属热处理,2004,29(4):37-38.
[5]韩荣第,于付.Ni-Ti形状记忆合金的切削试验[J].宇航材料工艺,1995(6):48-51.
[6]Sato A,Masuya T,Morishita M,et al.Strengthening of Fe-Mn-Si based shape memory alloys by grain size refinement[J].Materials Science Forum,2000,327-328:223-226.
[7]Fairuz M A,Nurul Adlina M J,Azmi A I,et al.Investigation of chip formation and tool wear in drilling process using various types of vegetable-oil based lubricants[J].Applied Mechanics and Materials,2015,799-800.
[8]Lin H C,Lin K M,Chen Y S,et al.Ion nitriding of Fe-30Mn-6Si-5Cr shape memory alloy:II.Erosion characteristics[J].Surface & Coatings Technology,2005,194(1):74-81.
[9]Cetin M H,Ozcelik B,Kuram E,et al.Evaluation of vegetable based cutting fluids with extreme pressure and cutting parameters in turning of AISI 304L by Taguchi method[J].Journal of Cleaner Production,2011,19(17-18):2049-2056.
[10]杨晓康,杨宏进,雷亚军,等.钛镍丝材切削性能改进[J].材料开发与应用,2008,23(6):9-11.
[11]Jia D,Li C,Zhang D,et al.Experimental verification of nanoparticle jet minimum quantity lubrication effectiveness in grinding[J].Journal of Nanoparticle Research,2014,16(12):1-15.
[12]陈冲,赵威,何宁,等.液氮冷却下大进给铣削TC4钛合金的试验研究[C].现代切削与测量工程国际研讨会,2014.