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Influence of the Residual Stress State on Cohesive Damage of PVD‐Coated Carbide Cutting Tools
Author(s) -
Denkena B.,
Breidenstein B.
Publication year - 2008
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.200800063
Subject(s) - residual stress , materials science , downtime , coating , carbide , residual , stress (linguistics) , metallurgy , composite material , forensic engineering , reliability engineering , computer science , engineering , algorithm , linguistics , philosophy
Cohesive damage of PVD‐coated carbide cutting tools always means an unscheduled production downtime and in many cases a partial damage of the workpiece. The cause for this kind of tool breakdown is ascribed by a model to a disadvantageous residual stress state of substrate and coating. The presented work observes the tool's residual stress states after single process steps during production by application of the sin 2 ψ method and the scattering vector method for the determination of residual stress depth distributions in order to verify the model. The obtained results prove the assumptions of the model.