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Novel multicomponent B2 ordered aluminides: compositional design, synthesis, characterization and thermal stability

G. Mohan Muralikrishna, A. Carmel Mary Esther, K. Guruvidyathri, P. Watermeyer, C. Liebscher, K. N. Kulkarni, G. Wilde, S. Divinski, B. S. Murty

Metals, 10, 1411, (2020)

DOI: 10.3390/met10111411

Download: BibTEX

For the first time, multicomponent alloys belonging to a B2-ordered single phase were designed and fabricated by melting route. The design concept of high entropy alloys is applied to engineering the transition metal sublattice of binary B2 aluminide. The equiatomic substitution of transition metal elements in the Ni sublattice of binary AlNi followed to produce Al(CoNi), Al(FeNi), Al(CoFe), Al(CoFeNi), Al(CoFeMnNi), and Al(CoCuFeMnNi) multicomponent alloys. CALculation of PHAse Diagrams (CALPHAD) approach was used to predict the phases in these alloys. X-ray diffraction and transmission electron microscopy were used to confirm the B2 ordering in the alloys. Thermal stability of the B2 phase in these alloys was demonstrated by prolonged heat treatments at 1373 K and 1073 K up to 200 h.

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{"type":"article", "name":"g.mohanmuralikrishna202011", "author":"G. Mohan Muralikrishna and A. Carmel Mary Esther and K. Guruvidyathri and P. Watermeyer and C. Liebscher and K. N. Kulkarni and G. Wilde and S. Divinski and B. S. Murty", "title":"Novel multicomponent B2 ordered aluminides: compositional design, synthesis, characterization and thermal stability", "journal":"Metals", "volume":"10", "OPTnumber":"11", "OPTmonth":"11", "year":"2020", "OPTpages":"1411", "OPTnote":"", "OPTkey":"multicomponent alloys; high entropy alloys; intermetallic compound; B2; aluminide; CALPHAD; phase diagrams; HRTEM; thermal stability", "DOI":"10.3390/met10111411"}
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