Person
Steven Van Petegem
Related publications (39)
Verification of selective laser melting heat source models with operando X-ray diffraction data
Helena Van Swygenhoven, Steven Van Petegem, Samy Hocine
The output obtained from operando X-ray diffraction experiments on Ti-6Al-4V is used to verify the accuracy of four FEM models in predicting the temperature evolution of the solidified domain, the cooling rates of the alpha and beta phases, and the influen ...
ELSEVIER2021A miniaturized selective laser melting device for operando X-ray diffraction studies
Helena Van Swygenhoven, Steven Van Petegem, Nicola Casati, Samy Hocine
We report on the development of a miniaturized device for operando X-ray diffraction during laser 3D printing. The printing chamber has a size of only 130 x 135 x 34 mm(3) and is optimized to be installed at synchrotron beamlines. We describe the design co ...
ELSEVIER2020Operando X-ray diffraction during laser 3D printing
Helena Van Swygenhoven, Steven Van Petegem, Nicola Casati, Samy Hocine
Laser based additive manufacturing allows to build a designed shape layer-by-layer, offering versatility and flexibility to many metallurgical sectors. The fast cooling rates and repeated heat cycles depending on the laser and scanning parameters are not e ...
2020Influence of thermo-mechanical history on the ordering kinetics in 18 carat Au alloys
Helena Van Swygenhoven, Steven Van Petegem, Nadine Baluc, Marina Garcia Gonzalez
Precious alloys are subjected to a series of mechanical and thermal operations during manufacturing. For 18 carat gold alloys the processing operations can induce L1(0) ordered nanodomains, known to lead to the buildup of residual stresses, which are the p ...
PERGAMON-ELSEVIER SCIENCE LTD2020Characterization, mechanical properties and dimensional accuracy of a Zr-based bulk metallic glass manufactured via laser powder-bed fusion
Roland Logé, Steven Van Petegem, Jamasp Jhabvala, Antonia Neels, Efthymios Polatidis, Annapaola Parrilli, Güven Kurtuldu, Navid Sohrabi
Bulk metallic glasses (BMGs) are high-strength, highly elastic materials due to their disordered atomic structure. Because BMGs require sufficiently high cooling rates to bypass crystallization, laser-based additive manufacturing (AM) methods have recently ...
2020Enhanced precipitate growth at reduced temperatures during chemical ordering in deformed red gold alloys
Helena Van Swygenhoven, Steven Van Petegem, Nadine Baluc, Marina Garcia Gonzalez, Samy Hocine
Manufacturing of red gold components relies widely on controlling the formation of ordered precipitates during thermo-mechanical processing. The ordered phase hardens the material, makes it less workable and introduces residual stresses. We show that an in ...
PERGAMON-ELSEVIER SCIENCE LTD2019In situ tension-tension strain path changes of cold-rolled Mg AZ31B
Helena Van Swygenhoven, Steven Van Petegem
The mechanical behavior of cold-rolled Mg AZ31B is studied during in-plane multiaxial loading and tension-tension strain path changes performed on cruciform samples using in situ neutron diffraction and EBSD. The results are compared with uniaxial tension ...
2019Laue microdiffraction characterisation of as-cast and tensile deformed Al microwires
Andreas Mortensen, Helena Van Swygenhoven, Steven Van Petegem, Léa Deillon, Suzanne Godelieve Alphonsine Verheyden
Single-crystalline cast aluminium microwires with a diameter near 15 are characterised by Laue microdiffraction. A microwire in the as-cast condition exhibits a misorientation below over a length of 500 . The measured density of geometrically necessary dis ...
TAYLOR & FRANCIS LTD2019Deformation and degradation of superelastic NiTi under multiaxial loading
Helena Van Swygenhoven, Steven Van Petegem, Efthymios Polatidis, Nicola Casati, Wei-Neng Hsu
The degradation of the superelastic properties of a commercial NiTi alloy is studied during uniaxial, biaxial and load-path-change cycling performed in-situ with synchrotron X-ray diffraction. Careful examination of the diffraction pattern during uniaxial ...
PERGAMON-ELSEVIER SCIENCE LTD2019Intergranular Strain Evolution During Biaxial Loading: A Multiscale FE-FFT Approach
Helena Van Swygenhoven, Steven Van Petegem
Predicting the macroscopic and microscopic mechanical response of metals and alloys subjected to complex loading conditions necessarily requires a synergistic combination of multiscale material models and characterization techniques. This article focuses o ...
Springer2017