Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

The influence of machining induced surface integrity and residual stress on the fatigue performance of Ti-6Al-4V following polycrystalline diamond and coated cemented carbide milling

Childerhouse, Thomas ; M'Saoubi, Rachid LU ; Franca, Luiz ; Weston, Nick ; Crawforth, Pete and Jackson, Martin (2022) In International Journal of Fatigue 163.
Abstract

Accurate fatigue life predictions of titanium alloy components requires an understanding of how the machining affected metallurgical and micro-mechanical subsurface condition influences fatigue crack nucleation and growth. This study investigates the influence of surface integrity features generated during carbide and high-speed polycrystalline diamond machining on the fatigue behaviour of coarse and fine-grained Ti-6Al-4V. Mechanically induced compressive residual stresses, promoted by higher feed rates and the larger cutting edge radii of carbide tools, have been demonstrated to provide an overriding enhancing effect on fatigue life due to crack initiation suppression and reducing the deleterious effects of microstructural deformation... (More)

Accurate fatigue life predictions of titanium alloy components requires an understanding of how the machining affected metallurgical and micro-mechanical subsurface condition influences fatigue crack nucleation and growth. This study investigates the influence of surface integrity features generated during carbide and high-speed polycrystalline diamond machining on the fatigue behaviour of coarse and fine-grained Ti-6Al-4V. Mechanically induced compressive residual stresses, promoted by higher feed rates and the larger cutting edge radii of carbide tools, have been demonstrated to provide an overriding enhancing effect on fatigue life due to crack initiation suppression and reducing the deleterious effects of microstructural deformation and surface imperfections.

(Less)
Please use this url to cite or link to this publication:
author
; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Crack initiation and growth, Finish machining, Powder metallurgy, Titanium alloys, Tool wear
in
International Journal of Fatigue
volume
163
article number
107054
publisher
Elsevier
external identifiers
  • scopus:85132315776
ISSN
0142-1123
DOI
10.1016/j.ijfatigue.2022.107054
language
English
LU publication?
yes
id
7211b7c1-84ba-4e1f-a31e-93a061761d7c
date added to LUP
2022-09-15 14:30:59
date last changed
2023-05-24 14:32:53
@article{7211b7c1-84ba-4e1f-a31e-93a061761d7c,
  abstract     = {{<p>Accurate fatigue life predictions of titanium alloy components requires an understanding of how the machining affected metallurgical and micro-mechanical subsurface condition influences fatigue crack nucleation and growth. This study investigates the influence of surface integrity features generated during carbide and high-speed polycrystalline diamond machining on the fatigue behaviour of coarse and fine-grained Ti-6Al-4V. Mechanically induced compressive residual stresses, promoted by higher feed rates and the larger cutting edge radii of carbide tools, have been demonstrated to provide an overriding enhancing effect on fatigue life due to crack initiation suppression and reducing the deleterious effects of microstructural deformation and surface imperfections.</p>}},
  author       = {{Childerhouse, Thomas and M'Saoubi, Rachid and Franca, Luiz and Weston, Nick and Crawforth, Pete and Jackson, Martin}},
  issn         = {{0142-1123}},
  keywords     = {{Crack initiation and growth; Finish machining; Powder metallurgy; Titanium alloys; Tool wear}},
  language     = {{eng}},
  publisher    = {{Elsevier}},
  series       = {{International Journal of Fatigue}},
  title        = {{The influence of machining induced surface integrity and residual stress on the fatigue performance of Ti-6Al-4V following polycrystalline diamond and coated cemented carbide milling}},
  url          = {{http://dx.doi.org/10.1016/j.ijfatigue.2022.107054}},
  doi          = {{10.1016/j.ijfatigue.2022.107054}},
  volume       = {{163}},
  year         = {{2022}},
}