Experimental and analytical study on adiabatic shear localized fracture characteristics in high-speed machining of pure titanium alloy

2022 ◽  
Author(s):  
Liyao Gu ◽  
Minjie Wang
Keyword(s):  
Titanium Alloy ◽  
High Speed ◽  
Analytical Study ◽  
Pure Titanium ◽  
Adiabatic Shear ◽  
High Speed Machining ◽  
Fracture Characteristics

scholarly journals B09 High speed machining of titanium alloy with PCD tools

2010 ◽  
Vol 2010.8 (0) ◽  
pp. 93-94
Author(s):  
Michiko OTA ◽  
Junya OKIDA ◽  
Hitoshi SUMIYA ◽  
Daisuke MURAKAMI ◽  
Naohiro TODA
Keyword(s):  
Titanium Alloy ◽  
High Speed ◽  
High Speed Machining ◽  
Pcd Tools

Stress Triaxiality in Chip Segmentation During High Speed Machining of Titanium Alloy

2014 ◽  
Author(s):  
Xueping Zhang ◽  
Rajiv Shivpuri ◽  
Anil K. Srivastava
Keyword(s):  
Titanium Alloy ◽  
High Speed ◽  
Split Hopkinson Pressure Bar ◽  
Shear Bands ◽  
Stress Triaxiality ◽  
Machining Process ◽  
High Speed Machining ◽  
Hopkinson Pressure Bar ◽  
Static Tests ◽  
Pressure Stress

Beside strain intensity, stress triaxiality (pressure-stress states) is the most important factor to control initiation of ductile fracture in chip segmentation through affecting the loading capacity and strain to failure. The effect of stress triaxiality on failure strain is usually assessed by dynamic Split Hopkinson Pressure Bar (SHPB) or quasi-static tests of tension, compression, torsion, and shear. However, the stress triaxialities produced by these tests are considerably different from those in high speed machining of titanium alloys where adiabatic shear bands (ASB) are associated with much higher strains, stresses and temperatures. This aspect of shear localization and fracture are poorly understood in previous research. This paper aims to demonstrate the role of stress triaxiality in chip segmentation during machining titanium alloy using finite element method. This research promotes a fundamental understanding of thermo-mechanics of the high-speed machining process, and provides a logical insight into the fracture mechanism in discontinuous chips.

Observations of Tool Life and Wear Mechanisms in High Speed Machining of Ti-6Al-4V With PCD Tools Using High Pressure Coolant Supply

2005 ◽  
Author(s):  
E. O. Ezugwu ◽  
J. Bonney ◽  
W. F. Sales ◽  
R. B. da Silva
Keyword(s):  
High Pressure ◽  
Titanium Alloy ◽  
Tool Life ◽  
Wear Mechanisms ◽  
High Speed ◽  
Cutting Tool ◽  
High Speed Machining ◽  
The Past ◽  
Pcd Tools ◽  
High Pressure Coolant

Usage of titanium alloys has increased since the past 50 years despite difficulties encountered during machining. In this study PCD tools were evaluated when machining Ti-6Al-4V alloy at high speed conditions under high pressure coolant supplies. Increase in coolant pressure tend to improve tool life and minimise adhesion of the work material on the cutting tool during machining. Adhesion can be accelerated by the susceptibility of titanium alloy to galling during machining.

scholarly journals 3D Simulation of Adiabatic Shear Bands in High Speed Machining

2007 ◽  
Author(s):  
Fabien Delalondre ◽  
Simon Guerdoux ◽  
Lionel Fourment
Keyword(s):  
High Speed ◽  
Shear Bands ◽  
Adiabatic Shear ◽  
3D Simulation ◽  
High Speed Machining ◽  
Adiabatic Shear Bands

Some Metallurgical Observations of Adiabatic Shear Phenomenon During High Speed Machining AISI 1045 Hardened Steel

2011 ◽  
Vol 4 (6) ◽  
pp. 2493-2497 ◽  
Author(s):  
Chunzheng Duan ◽  
Haiyang Yu ◽  
Honghua Li ◽  
Minjie Wang
Keyword(s):  
High Speed ◽  
Hardened Steel ◽  
Adiabatic Shear ◽  
High Speed Machining ◽  
Aisi 1045
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