B-Area: PinCh- Process integrated characterization using X-ray diffraction methods

Main Objective:

• Development and allocation of synchrotron instrumentation and methods to provide a real-time insight into complex thermo-mechanical processes, which proceed during the manufacturing or the modification of microstructures by means of laser processing
• to gain deeper comprehension of surface laser processing by means of the analyses of the time and temperature dependent evolution of the microstructure and of mechanical stresses 

• Oxide free laser surface hardening on low alloyed steels via  High Power Diode Lasers (HPDL)
• Spatially resolved ex-situ (after laser processing) analyses of residual stress distributions after laser surface hardening by means of X-Ray and Neutron diffraction
• In-situ spatial and time resolved synchrotron X-ray diffraction analyses during laser surface hardening of steel samples

• Systematic characterization of the local microstructure and of the local (residual) stress state with variation of process parameters for laser surface hardening of steel AISI 4140
• Establishment of an analysis set-up for process integrated material characterization with synchrotron X-ray diffraction during laser surface treatment
• Real time monitoring of phase transformations and of the mechanical stress evolution during laser surface hardening of steel AISI 4140