Authors
Advika Chesetti, Sucharita Banerjee, Sriswaroop Dasari, Mohan Sai Kiran Nartu, SM Varahabhatla, Abhishek Sharma, Abhishek Ramakrishnan, Daniel Satko, Stephane Gorsse, Ayman Salem, Rajarshi Banerjee
Publication date
2023/3/1
Journal
Scripta Materialia
Volume
225
Pages
115160
Publisher
Pergamon
Description
While complex concentrated alloys (CCAs), involving large fraction of refractory elements, are promising candidates for structural applications, their relatively high densities, processing challenges, and low plasticity, has retarded their development. Here, we report a 3D printable low-density precipitation strengthened CCA, Al10Nb15Ta5Ti30Zr40. The chemical homogeneity in the alloy deposited using laser bed powder fusion process is substantially better as compared to as-cast ingot. This homogeneity is attributed to the enhanced solubility at the high temperatures experienced during laser melting, small melt pool dimensions, and the high cooling rates. The as-built CCA exhibited an excellent balance of room temperature mechanical properties, a compressive yield stress ∼1400 MPa, peak stress ∼1700 MPa, and plastic strain exceeding 45%. These properties can be attributed to its unique as-processed …
Total citations
2023202452