Utilization of partial metallurgical injection for regulation of solidification forces in fusion welding processes (A07)

• Subject Area: Joining and Separation Technology
• Term: since 2014
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 236616214

In this subproject, compressive stresses are selectively generated by partial metallurgical manipulation with Low Transformation Temperature (LTT) weld metal. This is done by local volume expansion initiated by delayed martensitic phase transformation at reduced temperature. The focus is on distortion compensation through process control of martensitic phase transformation for targeted thermal strain control in the beam welding process. For this purpose, a simulation model is developed and used to predict residual stresses.

• DFG Programme: Collaborative Research Centres
• Subproject of: SFB 1120: Precision manufacturing by controlling melt dynamics and solidification in production processes
• Applicant Institution: Rheinisch-Westfälische Technische Hochschule Aachen
• Project Head: Professor Dr.-Ing. Uwe Reisgen