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Lasers in Manufacturing and Materials Processing

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01-09-2015

Laser Assisted Milling of Ti-6Al-4V ELI with the Analysis of Surface Integrity and its Economics

Authors: Gary K. Hedberg, Yung C. Shin

Published in: Lasers in Manufacturing and Materials Processing | Issue 3/2015

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Abstract

This study presents the experimental evaluation of laser assisted milling (LAML) of Ti-6AL-4V ELI (Ti-64), which is used in the orthopedic industry, by using localized preheating of the workpiece via laser irradiation. Improvements to the machinability of this material with LAML are assessed while considering the surface integrity. Suitable laser heating conditions as well as machining conditions are determined based on temperature prediction modeling. Machinability improvements are shown in terms of tool wear, material removal rates and cutting force reduction. Systematic characterization of samples is shown to demonstrate that the machined sub-surfaces are not adversely affected during LAML by precisely controlling laser heating, via hardness measurements, scanning electron microscopy (SEM) for microstructure analysis, and X-ray diffraction (XRD) for residual stresses. An economic analysis shows that LAML provides the cost reduction over conventional machining.

previous article Progress in Tridimensional (3d) Laser Forming of Stainless Steel Sheets

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Title: Laser Assisted Milling of Ti-6Al-4V ELI with the Analysis of Surface Integrity and its Economics
Authors: Gary K. Hedberg
Yung C. Shin
Publication date: 01-09-2015
Publisher: Springer US
Published in: Lasers in Manufacturing and Materials Processing / Issue 3/2015
Print ISSN: 2196-7229
Electronic ISSN: 2196-7237
DOI: https://doi.org/10.1007/s40516-015-0013-4

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