Scientific Highlights

Tipping point

The Tipping Point!

Exciting to see that some of our research on Narwhal tusk made it into an educational videogame about climate change in the Arctic and its impact on some of its inhabitants!

recrystallization_ebsd_teaser

Observing laser-induced recrystallization

Synchrotron X-ray diffraction sheds  light on laser-induced local recrystallization .

MiniSLM

Microstructural control of additively manufactured Ti-6Al-4V



In-situ Selective Laser Heat treatment is applied to induce martensite decomposition in Ti-6Al-4V

Recrystallization

Additive manufacturing of alloys with programmable microstructure and properties

Using laser powder bed fusion (LPBF) technology, we devise special processing strategies to ‘program’ the thermal stability of the as-printed alloy, such that it is possible to decide, a priori, how the material’s microstructure will evolve upon heat treatment

Photo of the tree-hole toad tree frog

On the trail of blue bones

The bones of the tree hollow toad tree frog are turquoise blue. Our team is currently investigating the nanostructure of the bone and its significance for the frog.

MUMOTT V1.0 logo

MUMOTT V1.0 released!

We are happy to announce the release of MUMOTT (multi-modal tensor tomography) 1.0, an all-Python package for the analysis of tensor tomography measurements! 

Setup miniSLM at MicroXAS

A close look at temperature profiles during laser 3D printing

Operando X-ray diffraction was used to measure process zone temperatures in laser powder bed fusion and compared with finite element simulations.

Tool Steel

Solidification modes during additive manufacturing

The thermal conditions during laser-based additive manufacturing are inferred from high-speed X-ray diffraction data and can be linked to a model for rapid solidification.

EBSD image of prior beta grains

Thermal cycling during 3D laser printing

High-speed in situ X-ray diffraction is used to measure temperature profiles and cooling rates during 3D printing of a a Ti-6Al-4V single-track wall.

Phase fractions in Ti-6Al-4V-3Fe

In situ alloying during additive manufacturing

In situ alloying is an effective method to engineer microstructures of additively manufactured Ti6Al4V3Fe alloys. 

LPBF Acoustic Emission

Deep learning-based monitoring of laser powder bed fusion processes

We present a novel monitoring strategy for 3D print processes that consists of developing and training a hybrid machine learning model that can classify regimes across different time scales based on heterogeneous sensing data. 

Al3(Sc,Zr)

Thermal and phase evolution during laser powder bed fusion of Al-Sc-Zr elemental powder blends

The reaction of elemental scandium and zirconium powders with liquid aluminum is observed directly via operando X-ray diffraction during laser 3D printing. This work demonstrates that elemental blends can be used to create fine-grained crack-free Al-alloys and highlights the importance of feature size.

Operando radiography

Direct observation of crack formation mechanisms with operando Laser Powder Bed Fusion X-ray radiography

Operando high-speed X-ray radiography experiments reveal the cracking mechanism during 3D laser printing of a Ni superalloy.

Texture red gold

Understanding variant selection and texture in additively manufactured red-gold alloys

Synchrotron X-ray diffraction experiments reveal the presence of a non- negligible amount of tetragonal phase in 3D printed red-gold samples.