Authors:
Sven Bengtsson (1), Dmitri Riabov (1)
1- Höganäs AB, Sweden
Abstract:
Additive manufacturing by powder bed fusion – laser beam process can produce parts with complex geometry and good mechanical strength. However, most conventional alloys with higher strength are not very well suited for the AM process, which has led to the development of new alloy systems. The newly developed Al-Mn-Cr-Zr alloy requires an aging process step after printing where several types of precipitates are formed. This is the main contributor to the strength of this alloy system. It is demonstrated that mechanical strength vs ductility of this alloy system produced via laser powder bed process route can be tailored by changing heat treatment parameters. In the present work tensile test bars were aged at 375 oC for different lengths of time. The response in terms of tensile test data, fracture surface appearance and microstructure are discussed in the paper.
DOI:
https://doi.org/10.59499/EP246281344
