Single Track Formation during Selective Laser Melting of Ti-6Al-4V Alloy

Baitimerov, R.M.

doi:10.4028/www.scientific.net/msf.946.978

Cited by 3 publications

(1 citation statement)

References 27 publications

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“…In that way detail is manufactured track by track, layer by layer. Depending on the laser beam diameter and other process parameters, especially layer thickness, geometrical characteristics of obtained single tracks can be significantly varied [21,22]. Moreover, it is obvious that microstructure of obtained material is changed too.…”

Section: Introductionmentioning

confidence: 99%

Influence of Powder Layer Thickness on Microstructure of Selective Laser Melted TiAl6V4

Lykov

Radionova

Shults

2020

SSP

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Section: Introductionmentioning

confidence: 99%

Influence of Powder Layer Thickness on Microstructure of Selective Laser Melted TiAl6V4

Lykov

Radionova

Shults

2020

SSP

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Single-Track Laser Scanning as a Method for Evaluating Printability: The Effect of Substrate Heat Treatment on Melt Pool Geometry and Cracking in Medium Carbon Tool Steel

Antikainen

Reijonen

Lagerbom

et al. 2022

J. of Materi Eng and Perform

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Nearly all commercially available alloys have been developed for manufacturing processes other than additive manufacturing. Most of those alloys are not suitable for laser powder bed fusion (L-PBF) processing due to the non-weldable nature of the alloys developed for casting, forging, and machining. Even some weldable alloys can be difficult to produce with L-PBF because the characteristics of L-PBF, such as highly concentrated heat input and the extremely high cooling rate, can lead to very high residual stresses and cracking. In order to speed up the development process of new alloys for additive manufacturing, a powder-free evaluation method was used to evaluate the materials processing window and susceptibility to cracking. Single tracks were scanned with an L-PBF machine onto H13 steel substrates. The substrate condition was varied, and its effect on melt pool geometry and cracking behavior was evaluated. The results clearly show that thermal history of the substrate influences its thermal conductivity, affecting melt pool volume. Melting point of the substrate was not found as significant factor as thermal conductivity on melt pool dimensions. Cracking type was noted to differ between substrates. If printability is assessed without powder, the substrate microstructure should be similar to rapidly solidified material. It is recognized that single-track tests are not adequate in terms of residual stress evaluation, but they can give valuable information about materials’ melting, segregation, and micro-scale cracking behavior.

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Quantitative study of geometric characteristics and formation mechanism of porosity defects in selective laser melted Ti6Al4V alloy by micro-computed tomography

AN,

SHUAI,

CHEN

et al. 2023

Transactions of Nonferrous Metals Society of China

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Single Track Formation during Selective Laser Melting of Ti-6Al-4V Alloy

Cited by 3 publications

References 27 publications

Influence of Powder Layer Thickness on Microstructure of Selective Laser Melted TiAl6V4

Influence of Powder Layer Thickness on Microstructure of Selective Laser Melted TiAl6V4

Single-Track Laser Scanning as a Method for Evaluating Printability: The Effect of Substrate Heat Treatment on Melt Pool Geometry and Cracking in Medium Carbon Tool Steel

Quantitative study of geometric characteristics and formation mechanism of porosity defects in selective laser melted Ti6Al4V alloy by micro-computed tomography

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