ICALEO 2013 Paper #1406 (Direct Metal Deposition of Titanium Matrix Composites: Optimization of the Process and Microstructural Analysis)

Direct Metal Deposition of Titanium Matrix Composites: Optimization of the Process and Microstructural Analysis
Authors:
Sebastien Pouzet, laboratoire PIMM; PARIS USA
Patrice Peyre, Laboratoire PIMM; Paris France
O. Castelnau, Laboratoire PIMM; Paris France
C. Gorny, Laboratoire PIMM; Paris France
C. Colin, Centre des Materiaux; Evry France
Presented at ICALEO 2013

Titanium matrix composites (TMC's) are attractive materials for aeronautical applications because of their superior mechanical performance at high temperature combined to their low density. The direct metal deposition (DMD) laser technique appears to be a flexible technique for gene...

ICALEO 2013 Paper #1405 (Automated Laser Metal Deposition Welding in the Field of Tool and Mould Making)

Automated Laser Metal Deposition Welding in the Field of Tool and Mould Making
Authors:
Markus Franz, University of Applied Sciences Jena; Jena Germany
Conrad Haupt, University of Applied Sciences Jena; Jena Germany
Jens Bliedtner, University of Applied Sciences Jena; Jena Germany
Jean Pierre Bergmann, Tu Ilmenau; Ilmenau Germany
Presented at ICALEO 2013

Throughout this scientific work examinations on an automated process chain for laser metal deposition (LMD) welding of metallic functional layers on a submatrix are carried out. First tests on metal sheets are made with a disc laser and a laser metal deposition -packet. The developed process chain ranges f...

ICALEO 2013 Paper #1404 (Embedding Optical Fibers Into Stainless Steel Using Laser Additive Manufacturing)

Embedding Optical Fibers Into Stainless Steel Using Laser Additive Manufacturing
Authors:
Dirk Havermann, Heriot-Watt University; Edinburgh USA
William N. Macpherson, Heriot-Watt University; Edinburgh Great Britain
Robert R.J. Maier, Heriot-Watt University; Edinburgh Great Britain
Duncan P. Hand, Heriot-Watt University; Edinburgh Great Britain
Presented at ICALEO 2013

Laser Additive Manufacturing provides novel and exciting possibilities when constructing 3-dimensional free form components in polymers and metals. The process of building 3-D components from the inside-out, opens up the possibility of embedding sensors directly into the heart of a component...

ICALEO 2013 Paper #1403 (Multi-Beam Laser Additive Manufacturing)

Multi-Beam Laser Additive Manufacturing
Authors:
Rahul Patwa, Fraunhofer Center for Laser Technology; Plymouth MI USA
Hans Herfurth, Fraunhofer Center for Laser Technology; Plymouth MI USA
Josh Chae, University of Michigan; Ann Arbor MI USA
Jyoti Mazumder, University of Michigan; Ann Arbor MI USA
Presented at ICALEO 2013

Today, Laser Additive Manufacturing (LAM) is typically performed using a single beam with power up to multiple-kilowatts. The associated high heat input and limited process control hampers tight manufacturing tolerances and the applicable material spectrum. This paper highlights the development of Multi-Beam LAM technology to alleviate s...

ICALEO 2013 Paper #1402 (Measurement of Particle Density Distribution of Powder Nozzles for Laser Material Deposition)

Measurement of Particle Density Distribution of Powder Nozzles for Laser Material Deposition
Authors:
Stefan Mann, Fraunhofer Institute for Laser Technology ; Aachen Germany
Leonardo de Melo, Fraunhofer Institute for Laser Technology ILT; Aachen Germany
Peter Abels, Fraunhofer Institute for Laser Technology ILT; Aachen Germany
Presented at ICALEO 2013

The delivery of powder to the melt pool via the nozzle is a crucial element at laser material deposition. It has a major influence on the consumption of powder material and the quality of the coating layer. In order to ensure consistently high process stability and quality, it is necessary to check the powder gas stream a...

ICALEO 2013 Paper #1401 (Direct Metal Deposition of Functional Graded Material)

Direct Metal Deposition of Functional Graded Material
Authors:
Armando Yanez, Universidade da Coruna; Ferrol Spain
Jose M. Amado, Universidade Da CoruñA; Ferrol Spain
Javier N. Montero, Universidade Da CoruñA; Ferrol Spain
MaríA J. Tobar, Universidade Da CoruñA; Ferrol Spain
Presented at ICALEO 2013

Functional graded materials (FGMs) are a class of composite materials that have a continuous variation of properties from one point to another. FGMs are not new but they could be an approach for eliminating the sharp interface between clad and substrate in the laser cladding process. It is possible to relieve stress concentration appearing in these laminate...

ICALEO 2013 Paper #1307 (Effect of Shielding Gas Composition on Co2-Laser Welding Quality)

Effect of Shielding Gas Composition on Co2-Laser Welding Quality
Authors:
Jukka Siltanen, Rautaruukki Oyj; Hämeenlinna Finland
Ville-Matti Nurmela, Ruukki Metals Oy; Uusikaupunki Finland
Ilpo Maaranen, Ruukki Metals Oy; Uusikaupunki Finland
Sakari Tihinen, Ruukki Metals Oy; Raahe Finland
Jukka Komi, Ruukki Metals Oy; Raahe Finland
Jurgen Scholz, Linde AG; Unterschleissheim Germany
Jyrki Honkanen, Oy AGA Ab; Espoo Finland
Bo Williams, AGA Gas Ab Weldonova; Lidingo Sweden
Presented at ICALEO 2013

Shielding gas is significant cost factor for CO2-laser welding, especially if helium is used. Replacing a part ...

ICALEO 2013 Paper #1305 (Laser and Electron Beam Welding of 25 Mm Thick A516 Gr.70 Steel )

Laser and Electron Beam Welding of 25 Mm Thick A516 Gr.70 Steel
Authors:
James Chen, Natural Resources Canada; Hamilton USA
Andrew Laver, Natural Resources Canada; ON Canada
Renata Zavadil, Natural Resources Canada; ON Canada
Jie1 Liang, Natural Resources Canada; ON Canada
Wenyue Zheng, Natural Resources Canada; ON Canada
Presented at ICALEO 2013

The safe and effective storage and disposal of high level waste and spent fuel is a high priority for many countries worldwide. In order to store vitrified high level waste in steel canisters in a facility 500 m underground, welding process has to be developed for the closure of nuclear waste canis...

ICALEO 2013 Paper #1304 (Laser Beam Welding in Vacuum of Thick Plate Structural Steel)

Laser Beam Welding in Vacuum of Thick Plate Structural Steel
Authors:
Stefan Jakobs, Welding and Joining Institute, Rwth Aachen University; Aachen Germany
Simon Olschok, Welding and Joining Institute; Aachen Germany
Uwe Reisgen, Welding and Joining Institute; Aachen Germany
Presented at ICALEO 2013

Laser beam and electron beam welding methods are well established in the manufacturing industry. Each of the methods has specific advantages which are used for a large variety of application cases.

For some time now, laser beam welding in vacuum has experienced a renaissance. First tests about the topic were made in Japan as early as in the Eighties. The brilliant sol...

ICALEO 2013 Paper #1301 (Indirect Measurement of Keyhole Pressure Oscillations During Laser Deep Penetration Welding)

Indirect Measurement of Keyhole Pressure Oscillations During Laser Deep Penetration Welding
Authors:
Joerg Volpp, Bias Ggmbh; Bremen Germany
Daniel Freimann, Bias Ggmbh; Bremen Germany
Presented at ICALEO 2013

The laser deep penetration welding process is highly dynamic. Besides melt pool oscillations the keyhole geometry as well as the pressure inside the keyhole oscillate at high frequencies. Those keyhole oscillations are assumed to support the unwanted process pore formation. Due to limited technological possibilities a direct method for observing the pressure and radius oscillations inside the keyhole is not state of the art.

Based on an existing indirect measuring system ...