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Predicting wear mechanisms of ultra-hard tooling in machining Ti6Al4V by diffusion couples and simulation

Lindvall, Rebecka LU ; Bjerke, Axel LU orcid ; Salmasi, Armin ; Lenrick, Filip LU orcid ; M'Saoubi, Rachid LU ; Ståhl, Jan Eric LU and Bushlya, Volodymyr LU (2023) In Journal of the European Ceramic Society 43(2). p.291-303
Abstract

Conventional cemented carbide is recommended for machining Ti6Al4V. However, polycrystalline diamond (PCD) and polycrystalline cubic boron nitride (pcBN) also show promise. Demands for higher productivity accelerate diffusional dissolution and chemically driven wear mechanisms in these tool materials. This study investigates active wear mechanisms by studying the interactions between Ti6Al4V and PCD, pcBN, and cemented carbide tools in diffusion couples at temperatures from 900° to 1300°C. All tool materials suffered from diffusion to varying degrees, and different chemical reactions occurred. Titanium carbide with minor vanadium alloying (Ti,V)C reaction products act as diffusion barriers when using PCD and cemented carbide, while the... (More)

Conventional cemented carbide is recommended for machining Ti6Al4V. However, polycrystalline diamond (PCD) and polycrystalline cubic boron nitride (pcBN) also show promise. Demands for higher productivity accelerate diffusional dissolution and chemically driven wear mechanisms in these tool materials. This study investigates active wear mechanisms by studying the interactions between Ti6Al4V and PCD, pcBN, and cemented carbide tools in diffusion couples at temperatures from 900° to 1300°C. All tool materials suffered from diffusion to varying degrees, and different chemical reactions occurred. Titanium carbide with minor vanadium alloying (Ti,V)C reaction products act as diffusion barriers when using PCD and cemented carbide, while the reaction products acting as diffusion barrier in pcBN is (Ti,V)B2. The presence of Mo and W in binder sites of pcBN reduces diffusional dissolution of cBN. Diffusion simulations agreed well with microscopy investigations and were enabled by the known temperature and pressure conditions of the static diffusion couples.

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author
; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Cemented carbide, Diffusion couple, pcBN, PCD, Ti6Al4V
in
Journal of the European Ceramic Society
volume
43
issue
2
pages
291 - 303
publisher
Elsevier
external identifiers
  • scopus:85139731397
ISSN
0955-2219
DOI
10.1016/j.jeurceramsoc.2022.10.005
language
English
LU publication?
yes
additional info
Publisher Copyright: © 2022 The Authors
id
8dce3d4b-4197-4b36-bf20-147d8b878f2c
date added to LUP
2022-10-21 17:46:51
date last changed
2024-03-21 14:47:27
@article{8dce3d4b-4197-4b36-bf20-147d8b878f2c,
  abstract     = {{<p>Conventional cemented carbide is recommended for machining Ti6Al4V. However, polycrystalline diamond (PCD) and polycrystalline cubic boron nitride (pcBN) also show promise. Demands for higher productivity accelerate diffusional dissolution and chemically driven wear mechanisms in these tool materials. This study investigates active wear mechanisms by studying the interactions between Ti6Al4V and PCD, pcBN, and cemented carbide tools in diffusion couples at temperatures from 900° to 1300°C. All tool materials suffered from diffusion to varying degrees, and different chemical reactions occurred. Titanium carbide with minor vanadium alloying (Ti,V)C reaction products act as diffusion barriers when using PCD and cemented carbide, while the reaction products acting as diffusion barrier in pcBN is (Ti,V)B<sub>2</sub>. The presence of Mo and W in binder sites of pcBN reduces diffusional dissolution of cBN. Diffusion simulations agreed well with microscopy investigations and were enabled by the known temperature and pressure conditions of the static diffusion couples.</p>}},
  author       = {{Lindvall, Rebecka and Bjerke, Axel and Salmasi, Armin and Lenrick, Filip and M'Saoubi, Rachid and Ståhl, Jan Eric and Bushlya, Volodymyr}},
  issn         = {{0955-2219}},
  keywords     = {{Cemented carbide; Diffusion couple; pcBN; PCD; Ti6Al4V}},
  language     = {{eng}},
  number       = {{2}},
  pages        = {{291--303}},
  publisher    = {{Elsevier}},
  series       = {{Journal of the European Ceramic Society}},
  title        = {{Predicting wear mechanisms of ultra-hard tooling in machining Ti6Al4V by diffusion couples and simulation}},
  url          = {{http://dx.doi.org/10.1016/j.jeurceramsoc.2022.10.005}},
  doi          = {{10.1016/j.jeurceramsoc.2022.10.005}},
  volume       = {{43}},
  year         = {{2023}},
}