Machinability of inconel 718 during turning: Cutting force model considering tool wear, influence on surface integrity

[Display omitted] •Machinability of Inconel 718 is studied in finish turning conditions using carbide tools.•A mechanistic cutting force model is improved for round inserts.•A new local formulation is tested to take tool wear into account.•This original model is validated over a wide range of finish...

Full description

Saved in:
Bibliographic Details
Published in:Journal of materials processing technology Vol. 285; p. 116809
Main Authors: Toubhans, Bastien, Fromentin, Guillaume, Viprey, Fabien, Karaouni, Habib, Dorlin, Théo
Format: Journal Article
Language:English
Published: Amsterdam Elsevier B.V 01.11.2020
Elsevier BV
Elsevier
Subjects:
Carbide tools
Cutting force
Cutting force model
Cutting parameters
Cutting tools
Cutting wear
Elastic deformation
Engineering Sciences
Evolution
Integrity
Machinability
Mechanical engineering
Mechanics
Nickel base alloys
Residual stress
Residual stresses
Superalloys
Surface integrity
Tool life
Tool wear
Turning
Turning (machining)
Workpieces
Surface integrity
Turning
Cutting force model
Residual stresses
Tool wear
Surface Integrity
ISSN:0924-0136, 1873-4774
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:[Display omitted] •Machinability of Inconel 718 is studied in finish turning conditions using carbide tools.•A mechanistic cutting force model is improved for round inserts.•A new local formulation is tested to take tool wear into account.•This original model is validated over a wide range of finishing parameters.•Residual stresses under the machined surface are studied depending on tool wear. Machining accuracy can be compromised by elastic workpiece deformation and subsurface residual stress introduction during cutting. In order to anticipate the impact of cutting forces and surface integrity evolutions on finished surface and its geometrical errors, it is necessary to better understand the influence of cutting conditions and tool wear. In this study, machinability of Inconel 718 using a round carbide tool in finish turning conditions is assessed. Cutting forces evolution during tool life are analysed and accompanied by advanced investigations of cutting phenomena. An original mechanistic cutting force model is developed, identified and tested. It includes the effect of tool wear over time in its local formulation. This model allows predicting cutting forces evolution along tool pass for a wide range of finishing cutting conditions. Furthermore, a thorough analysis of residual stress profiles at different tool wear levels is led. It features quantitative results for fresh and worn tools. A study on the influence of cutting parameters and tool wear on residual stress profiles in the machining affected zone is highlighted.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
ISSN:0924-0136
1873-4774
DOI:10.1016/j.jmatprotec.2020.116809