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"Additive manufacturing of a functionally graded high entropy alloy usi" by Yao Lu, Jun Wang et al.

A functionally graded AlxCoCrFeNi high entropy alloy with a variation in Al concentration along the building direction was in-situ produced using a hybrid powder-bed wire-based direct energy deposition process. A continuous transition from a single FCC structure to a major BCC+minor FCC dual-phase structure was achieved, benefiting from the remelting and reheating process during the deposition. In the FCC→BCC transition zone, the dendritic core region is identified as an FCC matrix decorated by AlNi-rich ordered B2 precipitates. The interdendritic area shows B2 precipitating in the FeCr-rich disordered A2 matrix. Additionally, the interface between the two regions shows that the A2 phase and ordered Cr3Fe intermetallic phase precipitate at the B2 phase. The mechanical properties show a tendency for higher strength and hardening rate but lower plasticity corresponding to the areas with higher Al content. Through quantitative estimation of different strengthening mechanisms, the contri ....

Functionally Graded Material , High Entropy Alloy , Hybrid Direct Energy Deposition , Mechanical Properties , Microstructure Evolution ,

Airbus and Safran Join British Consortium to Develop Metal 3D Printing

Airbus and Safran have announced that they are part of a new project to improve manufacturing processes in the aerospace sector ....

United Kingdom , Northern Ireland , Stephen Fitzpatrick , Queen University Belfast , Safran Join British Consortium To Develop Metal , National Manufacturing Institute Scotland , Northern Ireland Technology Center , University Of Strathclyde , Energy Deposition , Aerospace Technology Institute , Cranfield University , Safran Join British Consortium , Develop Metal , Safran Landing Systems , Hybrid Direct Energy Deposition , Directed Energy Deposition , Safran Landing , University Belfast , Additive Manufacturing , Machining Lead ,

Hybrid DED project offers sustainability boost

A consortium led by the National Manufacturing Institute Scotland (NMIS) is working with leading aerospace companies on a Hybrid Direct Energy Deposition (DED) project. ....

United Kingdom , Northern Ireland , Stephen Fitzpatrick , Queen University Belfast , Northern Ireland Technology Centre , National Manufacturing Institute Scotland , Energy Deposition , Strathclyde University , Aerospace Technology Institute , Cranfield University , Hybrid Direct Energy Deposition , Safran Landing Systems , High Value Manufacturing Catapult , University Belfast , National Manufacturing Institute ,