Surface integrity evolution and fatigue evaluation after milling mode, shot-peening and polishing mode for TB6 titanium alloy

2016 ◽  
Vol 387 ◽  
pp. 1257-1264 ◽  
Author(s):  
Changfeng Yao ◽  
Daoxia Wu ◽  
Lufei Ma ◽  
Liang Tan ◽  
Zheng Zhou ◽  
...  
Keyword(s):  
Titanium Alloy ◽  
Surface Integrity ◽  
Shot Peening ◽  
Tb6 Titanium Alloy ◽  
Fatigue Evaluation

scholarly journals Influence of Wear and Tool Geometry on the Chatter, Cutting Force, and Surface Integrity of TB6 Titanium Alloy with Solid Carbide Cutters of Different Geometry

2020 ◽  
Vol 66 (12) ◽  
pp. 709-723
Author(s):  
Jianyong Liu ◽  
Jianfei Sun ◽  
Uzair Khaleeq uz Zaman ◽  
Wuyi Chen
Keyword(s):  
Residual Stress ◽  
Titanium Alloy ◽  
Cutting Force ◽  
Surface Integrity ◽  
Geometric Structure ◽  
Tool Geometry ◽  
Structure Parameters ◽  
Variable Helix ◽  
Tb6 Titanium Alloy ◽  
End Mills

In this paper, vibration-free milling cutters (variable helix (VH) and variable pitch (VP) end mills) and standard (SD) end mills are used to machine TB6 (Ti-10V-2Fe-3Al) titanium alloy in order to study the influence of wear and geometric structure parameters of milling cutters on chatter, cutting force and surface integrity of machined surfaces. The results of the tests show that the wear of milling cutters has a significant influence on the chatter, cutting force, roughness, residual stress, and microhardness. Geometric structure parameters of milling cutters also have a clear impact on both chatter and cutting force. Also, chatter and cutting force have significant effects on roughness and residual stress, which are in turn affected by tool geometric structure parameters, separately.

scholarly journals Influence of turning tool wear on the surface integrity and anti-fatigue behavior of Ti1023

2021 ◽  
Vol 13 (4) ◽  
pp. 168781402110112
Author(s):  
Li Xun ◽  
Wang Ziming ◽  
Yang Shenliang ◽  
Guo Zhiyuan ◽  
Zhou Yongxin ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Plastic Deformation ◽  
Titanium Alloy ◽  
Fatigue Life ◽  
Tool Wear ◽  
Surface Integrity ◽  
Low Cycle Fatigue ◽  
Fatigue Behavior ◽  
Machined Surface ◽  
Deformation Layer

Titanium alloy Ti1023 is a typical difficult-to-cut material. Tool wear is easy to occur in machining Ti1023, which has a significant negative effect on surface integrity. Turning is one of the common methods to machine Ti1023 parts and machined surface integrity has a direct influence on the fatigue life of parts. To control surface integrity and improve anti-fatigue behavior of Ti1023 parts, it has an important significance to study the influence of tool wear on the surface integrity and fatigue life of Ti1023 in turning. Therefore, the effect of tool wear on the surface roughness, microhardness, residual stress, and plastic deformation layer of Ti1023 workpieces by turning and low-cycle fatigue tests were studied. Meanwhile, the influence mechanism of surface integrity on anti-fatigue behavior also was analyzed. The experimental results show that the change of surface roughness caused by worn tools has the most influence on anti-fatigue behavior when the tool wear VB is from 0.05 to 0.25 mm. On the other hand, the plastic deformation layer on the machined surface could properly improve the anti-fatigue behavior of specimens that were proved in the experiments. However, the higher surface roughness and significant surface defects on surface machined utilizing the worn tool with VB = 0.30 mm, which leads the anti-fatigue behavior of specimens to decrease sharply. Therefore, to ensure the anti-fatigue behavior of parts, the value of turning tool wear VB must be rigorously controlled under 0.30 mm during finishing machining of titanium alloy Ti1023.

scholarly journals Flow Field Simulation And Experimental Investigation On Macro Electrolyte Jet Electrochemical Turning of TB6 Titanium Alloy

2021 ◽  
Author(s):  
Yang Liu ◽  
Ningsong Qu ◽  
Zhi Qiu
Keyword(s):  
Titanium Alloy ◽  
Flow Field ◽  
Contour Error ◽  
Tool Electrode ◽  
Machined Surface ◽  
Tb6 Titanium Alloy ◽  
Machined Surface Roughness ◽  
Application Potential ◽  
Electrochemical Turning ◽  
Electrolyte Jet

Abstract Electrolyte jet electrochemical turning is an effective method to realize high-quality machining of titanium alloy rotating components; however, minimal research has been carried out in this field. This is because it is difficult to control the machining flow field, which leads to poor machining surface quality. In this work, numerical simulations were used to optimize the machining flow field and reduce the proportion of gas that mixed into the machining area. This can promote participation of the tool electrode tip in the electrochemical reaction and improve the machining efficiency. The effectiveness of the optimized machining flow field for jet electrochemical turning was verified experimentally. The results showed that all three kinds of revolving TB6 titanium alloy samples with different structures could maintain the original contour shape, with a contour error <1% and a machined surface roughness reaching Ra 2.414 μm. The results demonstrate the application potential of the jet electrochemical turning process.

scholarly journals Research on Cutting Force and Surface Integrity of TC18 Titanium Alloy by Longitudinal Ultrasonic Vibration Assisted Milling

2021 ◽  
Author(s):  
Weibo Xie ◽  
Xikui Wang ◽  
Erbo Liu ◽  
Jian Wang ◽  
Xiaobin Tang ◽  
...  
Keyword(s):  
Titanium Alloy ◽  
Cutting Force ◽  
Ultrasonic Vibration ◽  
Surface Integrity ◽  
Rotational Speed ◽  
Three Dimensional ◽  
Cutting Temperature ◽  
Surface Residual Stress ◽  
Deformation Layer ◽  
Vibration Milling

Abstract In order to study the influence of rotational speed and amplitude on the surface integrity, TC18 titanium alloy samples were milled by the process of conventional milling and longitudinal ultrasonic vibration assisted milling. The experimental data were obtained by dynamometer, thermometer, scanning electron microscope, X-ray diffractometer and three-dimensional surface topography instrument for observation and analysis. The results show that the rotational speed has a significant effect on the cutting force, cutting temperature, surface morphology and surface residual stress. Compared with ordinary milling, the surface micro-texture produced by ultrasonic vibration milling is more regular, , and with the increase of rotational speed, the influence of ultrasonic vibration on cutting force and cutting temperature decrease. There are adverse effects on surface roughness after ultrasonic vibration superposition. The influence of ultrasonic vibration on the surface residual compressive stress is also greatly reduced when the rotational speed is greater than 2400 rpm. In addition, a certain depth of plastic deformation layer can be formed under the surface of ultrasonic vibration machining, and the depth of deformation layer increases with the increase of vibration.

The Effect of Dry Machining on Surface Integrity of Titanium Alloy Ti-6Al-4V ELI

2008 ◽  
Vol 9 (1) ◽  
pp. 121-127 ◽  
Author(s):  
G.A. Ibrahim ◽  
C.H. Che Haron ◽  
J.A. Ghani
Keyword(s):  
Titanium Alloy ◽  
Surface Integrity ◽  
Dry Machining

Cut-Off Value of Detail Fatigue Rated Strength of TC4 Titanium Alloy with Compound Strengthening Treatment by Laser Shock Peening and Shot Peening

2020 ◽  
Vol 47 (5) ◽  
pp. 0502006
Author(s):  
刘亚鹏 Liu Yapeng ◽  
史志俊 Shi Zhijun ◽  
赵一昭 Zhao Yizhao ◽  
朱亮 Zhu Liang ◽  
刘马宝 Liu Mabao
Keyword(s):  
Titanium Alloy ◽  
Shot Peening ◽  
Laser Shock Peening ◽  
Laser Shock ◽  
Tc4 Titanium Alloy ◽  
Shock Peening
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