Johan Ahlström

2024

Mechanical properties and microstructural characterisation including high-temperature performance of Al-Mn-Cr-Zr-based alloys tailored for additive manufacturing

2024

Fatigue Crack Characteristics in Gradient Predeformed Pearlitic Steel under Multiaxial Loading

2024

Thermo-mechanical response of near-pearlitic steel heated under restriction of thermal expansion

2024

Evaluations and enhancements of fatigue crack initiation criteria for steels subjected to large shear deformations

The role of accumulated plasticity on yield surface evolution in pearlitic steel

2023

Fatigue Crack Propagation on Uniaxial Loading of Biaxially Predeformed Pearlitic Rail Steel

2023

Thermomechanical testing and modelling of railway wheel steel

2022

CRACK INITIATION CRITERIA FOR DEFORMED ANISOTROPIC R260 RAIL STEEL

SIMULATION OF REPAIR WELDING ON PEARLITIC RAILWAY STEEL USING ADDITIVE MANUFACTURING EQUIPMENT

2022

Homogenization based macroscopic model of phase transformations and cyclic plasticity in pearlitic steel

2022

Effect of annealing on microstructure in railway wheel steel

2022

Impact of contour scanning and helium-rich process gas on performances of Alloy 718 lattices produced by laser powder bed fusion

2022

A method for in-field railhead crack detection using digital image correlation

2022

Stress relief during annealing of railway wheel steel characterized by synchrotron X-ray micro-diffraction

2021

Modelling of temperature and strain rate dependent behaviour of pearlitic steel in block braked railway wheels

2021

Investigation of the strengthening mechanism in 316L stainless steel produced with laser powder bed fusion

2021

Effects of Temperature on the Evolution of Yield Surface and Stress Asymmetry in A356–T7 Cast Aluminium Alloy

2021

3D mapping of orientation variation and local residual stress within individual grains of pearlitic steel using synchrotron dark field X-ray microscopy

Modelling of cyclic plasticity and phase transformations during repeated local heating events in rail and wheel steels

Anisotropic yield surfaces after large shear deformations in pearlitic steel

2020

Effect of Strain Rate on the Deformation Behaviour of A356-T7 Cast Aluminium Alloys at Elevated Temperatures

2020

Effect of Temperature on Deformation and Fatigue Behaviour of A356–T7 Cast Aluminium Alloys Used in High Specific Power IC Engine Cylinder Heads

2020

Integrated Computational Material Design for PMC Manufacturing with Trapped Rubber

Damage evolution around white etching layer during uniaxial loading

2020

Effects of Dwell Time on the Deformation and Fatigue Behaviour of A356-T7 Cast Aluminium Alloys Used in High Specific Power IC Engine Cylinder Heads

Multi-axial Fatigue of Head-Hardened Pearlitic and Austenitic Manganese Railway Steels: A Comparative Study

Friction between pearlitic steel surfaces

2019

Deformation and fatigue behaviour of A356-T7 cast aluminium alloys used in high specific power IC engines

Thermomechanical fatigue of grey cast iron brake discs for heavy vehicles

Material model calibration against axial-torsion-pressure experiments accounting for the non-uniform stress distribution

2019

High temperature bi-axial low cycle fatigue behaviour of railway wheel steel

2019

Effect of strain gradient on the microstructure and mechanical properties of pearlitic steel

Microstructure and mechanical properties of the running band in a pearlitic rail steel: Comparison between biaxially deformed steel and field samples

Characterization of yield surface evolution due to large plastic shear strains in pearlitic rail steel

Numerical investigation of crack initiation in rails and wheels affected by martensite spots

Friction between pearlitic steel surfaces

2018

Modeling of kinematic hardening at large biaxial deformations in pearlitic rail steel

Evaluation of local strength via microstructural quantification in a pearlitic rail steel deformed by simultaneous compression and torsion

Modelling of cyclic plasticity and phase transformations during repeated local heating events in rail and wheel steels

A methodology to predict thermomechanical cracking of railway wheel treads: From experiments to numerical predictions

2017

Effect of shot peening on the residual stress and mechanical behaviour of low-temperature and high-temperature annealed martensitic gear steel 18CrNiMo7-6

2017

Characterization of deformed pearlitic rail steel

3D characterization of rolling contact fatigue crack networks

Residual stresses generated by repeated local heating events – Modelling of possible mechanisms for crack initiation

Temperature-dependent evolution of the cyclic yield stress of railway wheel steels

2016

Alloy design for intrinsically ductile refractory high-entropy alloys

Mechanical properties and fatigue behaviour of railway wheel steels as influenced by mechanical and thermal loadings

2015

The influence of temperatures and strain rates on the mechanical behavior of dual phase steel in different conditions

Thermomechanical cracking of railway wheel treads: a combined experimental and numerical approach

Temperature-dependent evolution of the cyclic yield stress of railway wheel steels

3D characterization of RCF crack networks

Mechanical properties and fatigue behavior of railway wheel steels as influenced by mechanical and thermal loadings

2015

Characterization of microstructural changes in near pearlitic steels using orientation imaging microscopy - influence of pre-deformation on local sensitivity to thermal degradation

Temperature and strain rate effects on the mechanical behavior of dual phase steel

2015

MODELING EVOLUTION OF ANISOTROPY IN PEARLITIC STEEL DURING COLD WORKING

Crack initiation caused by repeated local heating events – Modelling of possible mechanisms

Analysis of wear debris in rolling contact fatigue cracks of pearlitic railway wheels

2014

Estimation of microscale strain fields in a pearlitic steel using DIC and in-situ SEM

Rapid thermomechanical tempering of iron–carbon martensite

2014

3D characterisation of RCF crack networks

Identification of microscale strain fields from in-situ SEM images of a pearlitic steel using DIC

Mechanical properties of bulk- and hybrid nanocrystalline materials

2014

Thermal deterioration of railway wheel steels

Residual stresses in martensite after multiple heating events

Influence of short heat pulses on properties of martensite in medium carbon steels

Lcf loop shape in near pearlitic steels – influence of temperature

Characterisation of plastic deformation and thermal softening of the surface layer of railway passenger wheel treads

Subsurface crack networks and RCF surface cracks in pearlitic railway wheels

Modeling of Distortion during Casting and Machining of Aluminum Engine Blocks with Cast-in Gray Iron Liners

Monotonic and cyclic deformation of a high silicon pearlitic wheel steel

Thermal degradation of pearlitic steels: influence on mechanical properties including fatigue behaviour

Mechanical Behaviour of a Rephosphorized Steel for Car Body Applications — Effects of Temperature, Strain Rate and Pre-treatment

Short-time tempering kinetics of quench hardened pearlitic steels

Low cycle fatigue and deformation behaviour of austenitic manganese steel in rolled and as-cast conditions

Thermal softening of fine pearlitic steel and its effect on the fatigue behaviour

INNOTRACK Deliverable 3.1.6 -- Recommendation of, and scientific basis for, optimisation of switches & crossings - part 2. Paris:UIC

Modelling of distortion during casting and machining

Aspects of viscoplasticty on manufacturing induced out-of-roundness in engine cylinder liners

Stiffness changes during fatigue of railway steels R8/R8T at ambient and subzero temperatures

Modified Railway Wheel Steels: Production and Evaluation of Mechanical Properties with Emphasis on Low-Cycle Fatigue Behavior

Monotonic and cyclic deformation of medium and high strength rail steels

Monotonic and cyclic deformation of a high silicon pearlitic wheel steel

Low cycle fatigue behaviour of alternative steels for highly stressed rail components

Unloading stiffness of near fully pearlitic steel UIC-R8/R8T during cyclic plastic straining

The fatigue properties of modified railway wheel steels as influenced by low temperature and grain size

Parameter identification and modeling of large ratcheting strains in carbon steel

Static and Cyclic Behaviour of Near Fully Pearlitic Railway Steel - Influence of Temperature and Prestrain

Low cycle fatigue behaviour of railway wheel steels including temperature effects

Fatigue behaviour of rail steel - a comparison between strain and stress controlled loading

Using a MATLAB Exercise to Improve the Teaching and Learning of Heat Conduction During Welding

Modelling of Laser Cladding of Medium Carbon Steel - a First Approach

Modelling of heat conduction and phase transformations during sliding of railway wheels

Thermal and mechanical behaviour of railway wheel steel

Cyclic deformation and fatigue behaviour of microalloyed carbon steels for use in railway wheels

Analytical 1D model for analysis of the thermally affected zone formed during railway wheel skid

Fatigue crack nucleation induced by surface shearing of railway wheels

Microstructural evaluation and interpretation of the mechanically and thermally affected zone under railway wheel flats

Sample preparation and microstructural characterization of the gamma titanium aluminide Ti-48Al-2W-0.5Si