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Structure and Mechanics of Advanced Materials

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Scientific Highlights

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Datum
24. Januar 2023
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.

Weiterlesen
4. Dezember 2022
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.

Weiterlesen
23. September 2022
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. 

Weiterlesen
21. Juli 2022
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. 

Weiterlesen
11. April 2022
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.

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17. Januar 2022
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.

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10. Januar 2022
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. 

Weiterlesen
9. Dezember 2021
Marianne Liebi and Manuel Guizar-Sicairos

Ground-breaking technology development recognised

PSI researchers win the international Innovation Award on Synchrotron Radiation for 3D mapping of nanoscopic details in macroscopic specimens, such as bone.

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Contact

Structure and Mechanics of Advanced Materials Group

Paul Scherrer Institut
WBBA/114
5232 Villigen-PSI
Switzerland

Prof. Dr. Marianne Liebi
Group Leader
Telephone: +41 56 310 44 38
E-mail: marianne.liebi@psi.ch

Dr. Steven Van Petegem
Senior scientist
Telephone: +41 56 310 25 37
E-mail: steven.vanpetegem@psi.ch

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Laboratory for Condensed Matter Physics


Photon Science Division

Homepage of PSI Division Photon Science (PSD)

Scientific Highlights PSD

Scientific Highlights of PSI Division Photon Science (PSD)

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Synchrotron light large research facility.

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The new X-ray free electron laser facility.


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