scholarly journals Mechanism study on adiabatic shear fracture induced isolated segment formation during high-speed machining

Procedia CIRP ◽  
2018 ◽  
Vol 77 ◽  
pp. 348-350
Author(s):  
Liyao Gu
Keyword(s):  
High Speed ◽  
Shear Fracture ◽  
Adiabatic Shear ◽  
High Speed Machining ◽  
Mechanism Study ◽  
Adiabatic Shear Fracture ◽  
Isolated Segment

The influences of adiabatic shear evolution on tool failure in high-speed machining of railway steel

2018 ◽  
Vol 233 (5) ◽  
pp. 1588-1593
Author(s):  
Liyao Gu
Keyword(s):  
High Speed ◽  
Shear Fracture ◽  
Coupling Effect ◽  
White Layer ◽  
Cutting Speed ◽  
Adiabatic Shear ◽  
High Speed Machining ◽  
Rake Face ◽  
Serrated Chip ◽  
Tool Failure

Adiabatic shear evolution in serrated chip will lead to inevitable impacts on the tool failure with the cutting speed increasing. The high-speed machining experiment of railway steel was carried out by applying the cemented carbide insert. The chip morphology transformation with white layer during adiabatic shear evolution was observed, and its influence on the tool failure mechanism on rake face was further investigated microscopically. The experimental results were concluded that the isolated segment chip formation due to adiabatic shear fracture weakened the wear effects on the rake face under higher cutting speed. The periodical cycle from adiabatic shear banding to fracture which resulted in a thermal–mechanical coupling effect mainly influenced the rake face failure mechanisms.

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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