Incremental Forming of Titanium Ti6Al4V Alloy for Cranioplasty Plates—Decision-Making Process and Technological Approaches

Sever Racz,Octavian Bologa,Claudia Gîrjob,Radu Breaz,Anca Chicea,Melania Tera,Cristina Biriș

doi:10.3390/met8080626

Sever Racz, Octavian Bologa + Show 5 more

Open Access

https://doi.org/10.3390/met8080626

Copy DOI

Journal: Metals	Publication Date: Aug 9, 2018
Citations: 23	License type: CC BY 4.0

Affiliation: Lucian Blaga University of Sibiu

Abstract

Ti6Al4V titanium alloy is considered a biocompatible material, suitable to be used for manufacturing medical devices, particularly cranioplasty plates. Several methods for processing titanium alloys are reported in the literature, each one presenting both advantages and drawbacks. A decision-making method based upon AHP (analytic hierarchy process) was used in this paper for choosing the most recommended manufacturing process among some alternatives. The result of AHP indicated that single-point incremental forming (SPIF) at room temperature could be considered the best approach when manufacturing medical devices. However, Ti6Al4V titanium alloy is known as a low-plasticity material when subjected to plastic deformation at room temperature, so special measures had to be taken. The experimental results of processing parts from Ti6Al4V titanium alloy by means of SPIF and technological aspects are considered.

Highlights

IntroductionTitanium alloys are considered eligible materials for biomedical applications (implants and prosthetic devices) due to their biocompatibility
Titanium alloys are considered eligible materials for biomedical applications due to their biocompatibility
The results have shown that high-speed single-point incremental forming (SPIF) does not adversely does not adversely affect the microstructure of the materials

Summary

Introduction

Titanium alloys are considered eligible materials for biomedical applications (implants and prosthetic devices) due to their biocompatibility. A review regarding the titanium alloys seen as the best solution for orthopedic implants is presented in [2], where the main requirements for a material to be considered a biomaterial are introduced. Hip and knee implants are defined as the main orthopedic implants. Both studies presented in [1] and [2] mention Ti6Al4V alloy as one of the titanium alloys; it was initially developed for the aeronautical industry, but can be successfully used for biomedical applications

Methods

Results

Conclusion