Study on the Formation Mechanism of Phase Transformation and the Influencing Factors of Cutting Layer of the Typical Titanium Alloy

doi:10.3901/JME.2018.17.133

Abstract

Abstract: In the view of denaturation mechanism and its influence factors of machined surface of titanium alloy, firstly, the action mechanism of cutting edge on the cutting area during cutting process is analyzed. The energy method is used to establish the model of structure parameters, three factors of cutting and cutting energy consumption. The model is solved combined with Matlab. The influence of feed rate f on the cutting energy consumption W of titanium alloy is the biggest, cutting speed v_c is the second, and the influence of cutting depth a_p is the least. In order to verify the validity of the model, two kinds of different type of cemented carbide index-able inserts are used to conduct the contrast experiments of titanium alloy TC1, TC4, TA5 and alloy steel 30CrMnSiA under the conditions of normal air cooling and argon cooling. Meanwhile, the denaturation mechanism of machined surface of titanium alloy is defined as well as the regularity of the development. The research results can offer data support for the high quality processing of titanium alloy.

Key words: coupling effect, phase transformation layer, plastic deformation, titanium alloy, work hardening

CLC Number:

TG501

HE Genghuang, WU Mingyang, LI Lingxiang, ZOU Lingli, CHENG Cheng. Study on the Formation Mechanism of Phase Transformation and the Influencing Factors of Cutting Layer of the Typical Titanium Alloy[J]. Journal of Mechanical Engineering, 2018, 54(17): 133-141.

References

[1] 吴红兵,史云龙,杜雪,等. 电脉冲处理对钛合金超精密切削的影响[J]. 红外与激光工程,2016,45(2):1-4. WU Hongbing,SHI Yunlong,DU Xue,et al. Effects of electro pulsing treatment on ultra-precision cutting of titanium alloy Ti6Al4V[J]. Infrared and Laser Engineering,2016,45(2):1-4.
[2] 孙涛,傅玉灿,何磊,等. 损伤容限型钛合金的切削加工性[J]. 上海交通大学学报,2016,50(7):1017-1022 SU Tao,FU Yucan,HE Lei,et al. Cutting machinability for damage-tolerant titanium alloy[J]. Journal of Shanghai Jiao Tong University,2016,50(7):1017-1022.
[3] 赵威,王盛璋,李亮,等. 面向钛合金结构件的铣削刀具性能评价[J]. 华南理工大学学报,2015,43(9):121-126. ZHAO Wei,WANG Shengzhang,LI Liang,et al. Evaluation of cutting tool performance of end mills for titanium alloy components[J]. Journal of South China University of Technology,2015,43(9):121-126.
[4] HE Genghuang,LIU Xianli,WU Chonghu,et al. Study on the negative chamfered edge and its influence on the indexable cutting insert's lifetime and its strengthening mechanism[J]. The International Journal of Advanced Manufacturing Technology,2015,84(5):1229-1237.
[5] 刘丽娟,吕明,武文革,等. 高速铣削钛合金Ti-6Al-4V切屑形态试验研究[J]. 机械工程学报,2015,51(3):196-204. LIU Lijuan,LÜ Ming,WU Wenge,et al. Experimental study on the chip morpholgy in high speed milling Ti-6Al-4V Alloy[J]. Journal of Mechanical Engineering,2015,51(3):196-204.
[6] 徐媛,孙坤,自兴发,等. 不同应力状态下TC6钛合金不同组织绝热剪切敏感性研究[J]. 稀有金属材料与工程,2011,40(11):2002-2005. XU Yuan,SUN Kun,ZI Xingfa et al. Study on adiabatic shearing sensitivity of different microstructures of tc6 titanium alloy at different stress states[J]. Rare Metal Materials and Engineering,2011,40(11):2002-2005.
[7] YANG Yinfei,SU Yongsheng,NING Liangli,et al. Performance of cemented carbide tools with microgrooves in Ti-6Al-4V titanium alloy cutting[J]. The International Journal of Advanced Manufacturing Technology,2015,76(9):1731-1738.
[8] KONRAD Wegener. Cutting edge influence on machining titanium alloy[M]. Berlin Heidelberg:CIRP Encyclopedia of Production Engineering,2016:299-311.
[9] VOLKHONSKⅡ A O,BLINKOV I V,ANIKIN V N,et al. Hardening the hard-alloy edge tool used for cutting the tough-to-machine titanium alloys and chromium-nickel steels with multilayered nanostructured coatings[J]. Russian Journal of Non-Ferrous Metals,2015,56(6):633-641.
[10] THÉO D,GUILLAUME F,JEAN P C. Generalized cutting force model including contact radius effect for turning operations on Ti6Al4V titanium alloy[J]. The International Journal of Advanced Manufacturing Technology,2016,86(9):3297-3313.
[11] 杨树财,王志伟,张玉华,等. 微织构球头铣刀加工钛合金的有限元仿真[J]. 沈阳工业大学学报,2015,37(5):530-435. YANG Shucai,WANG Zhiwei,ZHANG Yuhua,et al. Finite element simulation for machining titanium alloy with micro-texture ball-end mill[J]. Journal of Shenyang University of Technology,2015,37(5):530-435.
[12] 张为,郑敏利,徐锦辉,等. 钛合金Ti-6Al-4V车削加工表面硬化试验[J]. 哈尔滨工程大学学报,2013,34(8):1052-1056. ZHANG Wei,ZHENG Minli,XU Jinhui,et al. Surface work-hardening experiment of titanium alloy Ti-6Al-4V turning[J]. Journal of Harbin Engineering University,2013,34(8):1052-1056.
[13] 徐颖强,李娜娜,李万钟,等. 硬态切削工件表面白层厚度预测方法[J]. 机械工程学报,2015,51(3):182-189. XU Yingqiang,LI Nana,LI Wanzhong,et al. Prediction method of the white layer thickness in hard cutting[J]. Journal of Mechanical Engineering,2015,51(3):182-189.
[14] HE Genghuang,LIU Xianli,WEN Xiao,et al. An investigation of the destabilizing behaviors of cemented carbide tools during the interrupted cutting process and its formation mechanisms[J]. The International Journal of Advanced Manufacturing Technology,2017,89(5):1959-1968.
[15] 何耿煌,李凌祥,邹伶俐,等. 亚微观倒棱切削刃对硬质合金刀片切削性能的影响特性研究[J]. 金刚石与磨料磨具工程,2017,37(3):46-54. HE Genghuang,LI Lingxiang,ZOU Lingli,et al. Influencing characteristic of submicroscopic chamfering cutting edge on the cutting property of cemented carbide insert[J]. Diamond & Abrasives Engineering,2017,37(3):46-54.
[16] 刘国伟,夏茜,王千叶,等. 切削式吸能热力耦合研究[J]. 振动与冲击,2015,34(14):93-99. LIU Guowei,XIA Xi,WANG Qianye,et al. Coupled thermo-structure analysis of cutting energy-absorbing process[J]. Journal of Vibration and Shock,2015,34(14):93-99.
[17] 刘献礼,刘铭,何耿煌,等. 重型切削过程硬质合金刀片的冲击破损行为[J]. 机械工程学报,2014,50(23):175-185. LIU Xianli,LIU Ming,HE Genghuang,et al. Impact damage behavior of the cemented carbide insert in the heavy cutting process[J]. Journal of Mechanical Engineering,2014,50(23):175-185.
[18] 刘培德,胡荣生,孙宝元,等. 切削力学新篇[M]. 大连:大连理工大学出版社,1991. LIU Peide,HU Rongsheng,SUN Baoyuan,et al. Cutting mechanics[M]. Dalian:Dalian University of Technology Press,1991.