4 papers
Multi-modal strain mapping of steel crack tips with micrometer spatial resolution
Ahmar Khaliq, Felix Wittwer, Markus Hartmann +6
Due to their superior fatigue strength, martensitic steels are the material of choice for high cyclic loading applications such as coil springs. However, crack propagation is influ…
Ultimate Sensitivity in X-ray Diffraction: Angular Moments vs. Shot Noise
Peter Modregger, Felix Wittwer, Ahmar Khaliq +6
The sensitivity of x-ray diffraction experiments towards Bragg peak parameters constitutes a crucial performance attribute of experimental setups. Frequently, diffraction peaks are…
Measurements of dislocations in 4H-SiC with rocking curve imaging
Ahmar Khaliq, Felix Wittwer, Niklas Pyrlik +9
4H Silicon Carbide (4H-SiC) combines many attractive properties such as a high carrier mobility, a wide bandgap, and a high thermal conductivity, making it an ideal candidate for h…
In situ Imaging of Precipitate Formation in Additively Manufactured Al-Alloys by Scanning X-ray Fluorescence
Isac Lazar, Bharat Mehta, Vendulka Bertschová +8
A new family of high-strength Al-alloys has recently been developed, tailored for the powder bed fusion-laser beam process. In these alloys, Mn, Cr and Zr are incorporated in solid…