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research-article

Self-Sufficient Modeling of Single Track Deposition of Ti-6Al-4V with the Prediction of Capture Efficiency

[+] Author and Article Information
Christopher Katinas

School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907, USA
ckatinas@purdue.edu

Shunyu Liu

School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907, USA
liu1760@purdue.edu

Yung Shin

Fellow ASME, School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907, USA
shin@purdue.edu

1Corresponding author.

ASME doi:10.1115/1.4041423 History: Received April 06, 2018; Revised August 27, 2018

Abstract

The paper presents a capture efficiency model, which would allow for prediction of the final track geometry and temperature field of a single track deposition of Ti-6Al-4V powder on a Ti-6Al-4V substrate during direct laser deposition with a LENS™ system. The model was able to predict the track height and width within 2 µm and 31 µm, respectively, or 3.3% error from experimentation. A maximum of 36 µm profile error was observed in the molten pool, and corresponds to errors of 11% and 4% in molten pool depth and width, respectively. Based on experimentation, the capture efficiency of a single track deposition of Ti-6Al-4V was found to be 12.0%, while that from simulation was calculated to be 11.7%, a 2.5% deviation.

Copyright (c) 2018 by ASME
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