Strategies for Increasing the Productivity of Pulsed Laser Cladding of Hot-Crack Susceptible Nickel-Base Superalloy Inconel 738 LC
A novel repair strategy based on decoupled heat source for increasing the productivity of wire-assisted pulsed laser cladding of the γ’-precipitation strengthening nickel-base superalloys Inconel 738 low carbon (IN 738 LC, base material) and Haynes 282 (HS 282, filler material) is presented. The las...
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doaj-9c0dba6682ad46b2800181e1e013ae3f2020-11-25T03:44:01ZengMDPI AGJournal of Manufacturing and Materials Processing2504-44942020-08-014848410.3390/jmmp4030084Strategies for Increasing the Productivity of Pulsed Laser Cladding of Hot-Crack Susceptible Nickel-Base Superalloy Inconel 738 LCChristian Kästner0Matthias Neugebauer1Klaus Schricker2Jean Pierre Bergmann3Production Technology Group, Technische Universität Ilmenau, Gustav-Kirchhoff-Platz 2, 98693 Ilmenau, GermanyProduction Technology Group, Technische Universität Ilmenau, Gustav-Kirchhoff-Platz 2, 98693 Ilmenau, GermanyProduction Technology Group, Technische Universität Ilmenau, Gustav-Kirchhoff-Platz 2, 98693 Ilmenau, GermanyProduction Technology Group, Technische Universität Ilmenau, Gustav-Kirchhoff-Platz 2, 98693 Ilmenau, GermanyA novel repair strategy based on decoupled heat source for increasing the productivity of wire-assisted pulsed laser cladding of the γ’-precipitation strengthening nickel-base superalloys Inconel 738 low carbon (IN 738 LC, base material) and Haynes 282 (HS 282, filler material) is presented. The laser beam welding process is supported by the hot-wire technology. The additional energy is utilized to increase the deposition rate of the filler material by increasing feeding rates and well-defining the thermal management in the welding zone. The simultaneous application of laser pulse modulation allows the precise control of the temperature gradients to minimize the hot-crack formation. Accompanying investigations such as high-speed recordings and numerical simulations allow a generalized statement on the influence of the adapted heat management on the resulting weld seam geometry (dilution, aspect ratio and wetting angle) as well as the formation of hot-cracks and lack of fusion between base and filler material. Statistical analysis of the data—the input parameters like laser pulse energy, pulse shape, hot-wire power and wire-feeding rate in conjunction with the objectives like dilution, aspect ratio, wetting angle and hot-cracking behavior—revealed regression functions to predict certain weld seam properties and hence the required input parameters.https://www.mdpi.com/2504-4494/4/3/84nickel-base superalloyrepair weldinghot-wirepulse shapingheat managementstatistical analysis |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Christian Kästner Matthias Neugebauer Klaus Schricker Jean Pierre Bergmann |
spellingShingle |
Christian Kästner Matthias Neugebauer Klaus Schricker Jean Pierre Bergmann Strategies for Increasing the Productivity of Pulsed Laser Cladding of Hot-Crack Susceptible Nickel-Base Superalloy Inconel 738 LC Journal of Manufacturing and Materials Processing nickel-base superalloy repair welding hot-wire pulse shaping heat management statistical analysis |
author_facet |
Christian Kästner Matthias Neugebauer Klaus Schricker Jean Pierre Bergmann |
author_sort |
Christian Kästner |
title |
Strategies for Increasing the Productivity of Pulsed Laser Cladding of Hot-Crack Susceptible Nickel-Base Superalloy Inconel 738 LC |
title_short |
Strategies for Increasing the Productivity of Pulsed Laser Cladding of Hot-Crack Susceptible Nickel-Base Superalloy Inconel 738 LC |
title_full |
Strategies for Increasing the Productivity of Pulsed Laser Cladding of Hot-Crack Susceptible Nickel-Base Superalloy Inconel 738 LC |
title_fullStr |
Strategies for Increasing the Productivity of Pulsed Laser Cladding of Hot-Crack Susceptible Nickel-Base Superalloy Inconel 738 LC |
title_full_unstemmed |
Strategies for Increasing the Productivity of Pulsed Laser Cladding of Hot-Crack Susceptible Nickel-Base Superalloy Inconel 738 LC |
title_sort |
strategies for increasing the productivity of pulsed laser cladding of hot-crack susceptible nickel-base superalloy inconel 738 lc |
publisher |
MDPI AG |
series |
Journal of Manufacturing and Materials Processing |
issn |
2504-4494 |
publishDate |
2020-08-01 |
description |
A novel repair strategy based on decoupled heat source for increasing the productivity of wire-assisted pulsed laser cladding of the γ’-precipitation strengthening nickel-base superalloys Inconel 738 low carbon (IN 738 LC, base material) and Haynes 282 (HS 282, filler material) is presented. The laser beam welding process is supported by the hot-wire technology. The additional energy is utilized to increase the deposition rate of the filler material by increasing feeding rates and well-defining the thermal management in the welding zone. The simultaneous application of laser pulse modulation allows the precise control of the temperature gradients to minimize the hot-crack formation. Accompanying investigations such as high-speed recordings and numerical simulations allow a generalized statement on the influence of the adapted heat management on the resulting weld seam geometry (dilution, aspect ratio and wetting angle) as well as the formation of hot-cracks and lack of fusion between base and filler material. Statistical analysis of the data—the input parameters like laser pulse energy, pulse shape, hot-wire power and wire-feeding rate in conjunction with the objectives like dilution, aspect ratio, wetting angle and hot-cracking behavior—revealed regression functions to predict certain weld seam properties and hence the required input parameters. |
topic |
nickel-base superalloy repair welding hot-wire pulse shaping heat management statistical analysis |
url |
https://www.mdpi.com/2504-4494/4/3/84 |
work_keys_str_mv |
AT christiankastner strategiesforincreasingtheproductivityofpulsedlasercladdingofhotcracksusceptiblenickelbasesuperalloyinconel738lc AT matthiasneugebauer strategiesforincreasingtheproductivityofpulsedlasercladdingofhotcracksusceptiblenickelbasesuperalloyinconel738lc AT klausschricker strategiesforincreasingtheproductivityofpulsedlasercladdingofhotcracksusceptiblenickelbasesuperalloyinconel738lc AT jeanpierrebergmann strategiesforincreasingtheproductivityofpulsedlasercladdingofhotcracksusceptiblenickelbasesuperalloyinconel738lc |
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