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Robert Pederson

Avdelningschef

Staff member at Division of Subtractive and Additive Manufacturing.

Conducts research in research centers, production technology west, engineering and technology, production technology.


Research Projects


Publications


Microstructural influence on fatigue crack propagation during high cycle fatigue testing of additively manufactured Alloy 718

Published

Microstructural influence on fatigue crack propagation during high cycle fatigue testing of additively manufactured Alloy 718

A study of the microstructure of additively manufactured Alloy 718 was performed in order to better understand the parameters that have an influenc...

Residual Lattice Strain and Phase Distribution in Ti-6Al-4V Produced by Electron Beam Melting

Published

Residual Lattice Strain and Phase Distribution in Ti-6Al-4V Produced by Electron Beam Melting

Residual stress/strain and microstructure used in additively manufactured material are strongly dependent on process parameter combination. With th...

Additive Manufacturing of Alloy 718 via Electron Beam Melting : Effect of Post-Treatment on the Microstructure and the Mechanical Properties.

Published

Additive Manufacturing of Alloy 718 via Electron Beam Melting : Effect of Post-Treatment on the Microstructure and the Mechanical Properties.

Alloy 718 finds application in gas turbine engine components, such as turbine disks, compressor blades and so forth, due to its excellent mechanica...

Alpha texture variations in additive manufactured Ti-6Al-4V investigated with neutron diffraction

Published

Alpha texture variations in additive manufactured Ti-6Al-4V investigated with neutron diffraction

Variation of texture in Ti-6Al-4V samples produced by three different additive manufacturing (AM) processes has been studied by neutron...

Electron backscatter diffraction characterization of fatigue crack growth in laser metal wire deposited Ti-6Al-4V

Published

Electron backscatter diffraction characterization of fatigue crack growth in laser metal wire deposited Ti-6Al-4V

By additive manufacturing (AM) there is a feasibility of producing near net shape components in basically one step from 3D CAD model to final...

Influence of cyclic thermal treatments on the oxidation behavior of Ti-6Al-2Sn-4Zr-2Mo alloy

Published

Influence of cyclic thermal treatments on the oxidation behavior of Ti-6Al-2Sn-4Zr-2Mo alloy

Ti-6Al-2Sn-4Zr-2Mo is one of the most common titanium alloys for aerospace industry. This alloy experiences oxidation phenomenon at elevated...

Influence of defects and as-built surface roughness on fatigue properties of additively manufactured Alloy 718

Published

Influence of defects and as-built surface roughness on fatigue properties of additively manufactured Alloy 718

Electron beam melting (EBM) and Selective Laser Melting (SLM) are powder bed based additive manufacturing (AM) processes. These, relatively new,...

Microstructural characterization and comparison of Ti-6Al-4V manufactured with different additive manufacturing processes

Published

Microstructural characterization and comparison of Ti-6Al-4V manufactured with different additive manufacturing processes

In this work, the microstructures of Ti-6Al-4V manufactured by different additive manufacturing (AM) processes have been characterized and compared...

Microstructure and Porosity of Laser Welds in Cast Ti-6Al-4V with Addition of Boron

Published

Microstructure and Porosity of Laser Welds in Cast Ti-6Al-4V with Addition of Boron

Addition of small amounts of boron to cast Ti-6Al-4V alloy has shown to render a finer microstructure and improved mechanical properties. For such ...

Chemical Milling of Cast Ti-6Al-4V and Ti-6Al-2Sn-4Zr-2Mo Alloys in Hydrofluoric-Nitric Acid Solutions

Published

Chemical Milling of Cast Ti-6Al-4V and Ti-6Al-2Sn-4Zr-2Mo Alloys in Hydrofluoric-Nitric Acid Solutions

The behavior of cast Ti-6Al-4V and Ti-6Al-2Sn-4Zr-2Mo during chemical milling in hydrofluoric-nitric (HF-HNO3) acid solutions with 1:3 and 1:11 mol...

Microstructure and Defects in Additive Manufactured Titanium : a Comparison Between Microtomography and Optical Microscopy

Published

Microstructure and Defects in Additive Manufactured Titanium : a Comparison Between Microtomography and Optical Microscopy

The aim of this work has been to compare two different analysing methods; x-ray microtomography and light optical microscopy, when it comes to...

Microstructure characterisation of Ti-6Al-4V from different additive manufacturing processes

Published

Microstructure characterisation of Ti-6Al-4V from different additive manufacturing processes

The focus of this work has been microstructure characterisation of Ti-6Al-4V manufactured by five different additive manufacturing (AM) processes....

Oxidation behavior of TI-6Al-4V alloy exposed to isothermal and cyclic thermal treatments

Published

Oxidation behavior of TI-6Al-4V alloy exposed to isothermal and cyclic thermal treatments

One of the most common titanium alloys for aerospace industry is Ti-6Al-4V (usually designed as Ti-64) which is used for manufacturing aero-engine...

Simulation of additive manufacturing using coupled constitutive and microstructure models

Published

Simulation of additive manufacturing using coupled constitutive and microstructure models

The paper describes the application of modeling approaches used in Computational Welding Mechanics (CWM) applicable for simulating Additive...

The hierarchy of microstructure parameters affecting the tensile ductility in centrifugally cast and forged Ti-834 alloy during high temperature exposure in air

Published

The hierarchy of microstructure parameters affecting the tensile ductility in centrifugally cast and forged Ti-834 alloy during high temperature exposure in air

Ductility regression is the main concern in using Ti-834 titanium alloy at temperatures above 500 °C for aerospace applications. The reduction of...

Temperature and microstructure evolution in Gas Tungsten Arc Welding wire feed additive manufacturing of Ti-6Al-4V

Published

Temperature and microstructure evolution in Gas Tungsten Arc Welding wire feed additive manufacturing of Ti-6Al-4V

The Finite Element Method (FEM) is used to solve temperature field and microstructure evolution during GTAW wire feed additive manufacturing...