1. Home
  2. Mechanics
  3. Material processing - Assembly

  4. Additive manufacturing of Ti-6Al-4V parts by powder bed fusion

Article | REF: BM7930 V1

Additive manufacturing of Ti-6Al-4V parts by powder bed fusion

Authors: Charlotte de FORMANOIR, Stéphane GODET, Mohamed GOUNE, Sylvie BORDÈRE, Stéphane GORSSE

Publication date: July 10, 2020

You do not have access to this resource.
Click here to request your free trial access!

Already subscribed? Log in!

Overview

Français

ABSTRACT

This article discusses the microstructures and mechanical behaviour of the Ti-6Al-4V alloy used in additive manufacturing, in comparison to its wrought counterparts. After a presentation of the main phase transformations within the Ti-6Al-4V alloy, the relationship between process, microstructure and mechanical properties, defect formation mechanisms and post-treatment effects are described.

Read this article from a comprehensive knowledge base, updated and supplemented with articles reviewed by scientific committees.

Read the article

AUTHORS

  • Charlotte de FORMANOIR: Postdoctoral researcher, Paul Scherrer Institut, - Villigen PSI, Switzerland

  • Stéphane GODET: Professor – Université Libre de Bruxelles, - Materials Engineering, Characterization, Synthesis and Recycling Research Center (4MAT), Brussels, Belgium

  • Mohamed GOUNE: Professor – University of Bordeaux, - Bordeaux Institute of Condensed Matter Chemistry, - UMR 5026 (CNRS, Univ. Bordeaux, Bordeaux INP), Pessac, France

  • Sylvie BORDÈRE: Research associate – CNRS, - Bordeaux Institute of Condensed Matter Chemistry, - UMR 5026 (CNRS, Univ. Bordeaux, Bordeaux INP), Pessac, France

  • Stéphane GORSSE: Associate Professor – Bordeaux INP, - Bordeaux Institute of Condensed Matter Chemistry, - UMR 5026 (CNRS, Univ. Bordeaux, Bordeaux INP), Pessac, France

 INTRODUCTION

Given the difficulty of shaping titanium and its alloys using conventional processes, additive manufacturing is increasingly emerging as an attractive alternative for the production of structures with complex geometries [BM 7 940] . Among the various additive manufacturing technologies, powder-bed melting processes [BM 7 900] offer the best dimensional accuracy. This involves manufacturing a three-dimensional part, layer by layer, by selective powder fusion. Electron Beam Melting (EBM) and Selective Laser Melting (SLM, or Laser Beam Melting, LBM) are currently the two most widely used technologies for additive manufacturing of Ti-6Al-4V titanium alloy. Whatever the energy source used for melting the powder bed – electron beam or laser –, the microstructure and mechanical properties are conditioned by the thermal history. The resulting microstructure and any defects present within the material can, to a certain extent, be modified by subsequent heat treatments.

In this article, we first review the basics of titanium metallurgy, focusing on phase transformations within the Ti-6Al-4V alloy (§ 1.1 ). We then describe typical microstructures obtained at the machine output. These are compared with those generated by conventional wrought processes (§ 1.2

You do not have access to this resource.

Exclusive to subscribers. 97% yet to be discovered!

You do not have access to this resource.
Click here to request your free trial access!

Already subscribed? Log in!

The Ultimate Scientific and Technical Reference

A Comprehensive Knowledge Base, with over 1,200 authors and 100 scientific advisors
+ More than 10,000 articles and 1,000 how-to sheets, over 800 new or updated articles every year
From design to prototyping, right through to industrialization, the reference for securing the development of your industrial projects

KEYWORDS

additive manufacturing   |   titanium alloys

This article is included in

Material processing - Assembly

This offer includes:

Knowledge Base

Updated and enriched with articles validated by our scientific committees

Services

A set of exclusive tools to complement the resources

Practical Path

Operational and didactic, to guarantee the acquisition of transversal skills

Doc & Quiz

Interactive articles with quizzes, for constructive reading

Subscribe now!

Ongoing reading
Additive manufacturing of titanium parts by selective powder bed melting
Outline