Titanium based bone implants production using laser powder bed fusion technology


Depboylu F. N. , YASA E., Poyraz O., Minguella-Canela J., KORKUSUZ F., De los Santos Lopez M. A.

JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T, vol.17, pp.1408-1426, 2022 (Peer-Reviewed Journal) identifier identifier

  • Publication Type: Article / Review
  • Volume: 17
  • Publication Date: 2022
  • Doi Number: 10.1016/j.jmrt.2022.01.087
  • Journal Name: JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
  • Journal Indexes: Science Citation Index Expanded, Scopus, Compendex, INSPEC, Directory of Open Access Journals
  • Page Numbers: pp.1408-1426
  • Keywords: "Laser powder bed fusion", "Titanium", "Biomedical", "Implant", "Biomechanical properties" "Bone", COMMERCIALLY PURE TITANIUM, MINIMAL SURFACE-STRUCTURES, VOLUMETRIC ENERGY DENSITY, MELTED TI-6AL-4V ALLOY, MECHANICAL-PROPERTIES, BIOMEDICAL APPLICATIONS, FATIGUE BEHAVIOR, WEAR PROPERTIES, MICROSTRUCTURE, DESIGN

Abstract

Additive manufacturing (AM) enables fully dense biomimetic implants in the designed geometries from preferred materials such as titanium and its alloys. Titanium aluminum vanadium (Ti6Al4V) is one of the pioneer metal alloys for bone implant applications, however, the reasons for eliminating the toxic effects of Ti6Al4V and maintaining adequate mechanical strength have increased the potential of commercially pure titanium (cp-Ti) to be used in bone implants. This literature review aims to evaluate the production of cp-Ti and Ti6Al4V biomedical implants with laser powder bed fusion (L-PBF) technology, which has a very high level of technological matureness and industrialization level. The optimization of L-PBF manufacturing parameters and post-processing techniques affect the obtained microstructure leading to various mechanical, corrosion and biological behaviors of the manufactured titanium. All of the features are considered in the light of specifications and needs of bone implant applications. The most critical disadvantages of the L-PBF technology, such as residual stresses and leading deformations are introduced and the potential solutions are discussed. Moreover, the manufacturability of porous bone implants that causes benefit and harm in L-PBF applications are assessed.(c) 2022 Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).