New paper out!
New paper published on the effects of beam shaping on copper-steel interfaces in multi-material laser powder bed fusion !
Enhanced component functionality can be achieved by combining materials with distinct properties – however this comes with a price, as significant mismatch in the material properties may also cause interface defects. Our latest research dives into the Copper-Steel combination, addressing an embrittlement phenomenon at the interface known as copper contamination cracking (CCC). We have pioneered the use of laser beam shaping in multi-material laser powder bed fusion, restricting material intermixing at the interface to a few tens of micrometers. This not only minimized interface defects significantly, but also modified the microstructure of the multi-material structure compared to a traditional Gaussian beam laser.
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