Synthesis and Mechanical Characterization of Binary and Ternary Intermetallic Alloys Based on Fe-Ti-Al by Resonant Ultrasound Vibrational Methods

Abstract

Precise but simple experimental and inverse methods allowing the recovery of mechanical material parameters are necessary for the exploration of materials with novel crystallographic structures and elastic properties, particularly for new materials and those existing only in theory. The alloys studied herein are of new atomic compositions. This paper reports an experimental study involving the synthesis and development of methods for the determination of the elastic properties of binary (Fe-Al, Fe-Ti and Ti-Al) and ternary (Fe-Ti-Al) intermetallic alloys with different concentrations of their individual constituents. The alloys studied were synthesized from high purity metals using an arc furnace with argon flow to ensure their uniformity and homogeneity. Precise but simple methods for the recovery of the elastic constants of the isotropic metals from resonant ultrasound vibration data were developed. These methods allowed the fine analysis of the relationships between the atomic concentration of a given constituent and the Young’s modulus or alloy density.

Uso da Técnica de Ressonância de Barras no Monitoramento das Propriedades Mecânicas da Zona Fundida do Aço ASTM A36

“…Foi designada como deslocamento negativo a leitura que se aproximaram no sentido do centro da amostra e deslocamento positivo sentido inverso. Como descrito nos trabalhos de Chanbi et al [11] e Bao et al [12], foram realizados vários testes objetivando verificar os resultados de E (GPa), G (GPa) e Poisson, alinhando a localização dos picos com as razões entre picos esperado/real objetivando menor erro e menor desvio padrão entre cada leitura. Também, as amostras foram giradas em várias direções no plano, isso foi feito para verificar se os espectros de resposta à vibração eram os mesmos e assim verificar a homogeneidade/isotropia das amostras no MB e na região da ZF.…”

Microstructural and Mechanical Properties of Binary Ti-Rich Fe–Ti, Al-Rich Fe–Al, and Ti–Al Alloys

“…A 3D elastodynamic finite-element direct-solution steady-state dynamic analysis was used to calculate the steady-state dynamic linearized response of the disc submitted to a concentrated harmonic-force excitation [32]. The concentrated force was applied at the center of the disc to only excite longitudinal modes as confirmed in the computed response [33]. In a second step, force was applied to the edge of the disc to excite all modes.…”

Characterization of Titanium Alloy Obtained by Powder Metallurgy

“…However, despite the very good physical and mechanical properties of titanium, the reason for its diminished area of applicability in the field of engineering is the high cost of titanium as a pure metal [ 4 ] and the difficult handling conditions, due to fine titanium powder flammability in contact with air [ 5 ] and low tribological properties [ 6 ]. For these reasons, titanium-based alloys are used in industrial applications [ 7 ], such as in the aerospace [ 8 , 9 , 10 , 11 ], automotive [ 12 ], chemical and petrochemical industries [ 13 ], as well as electronics and electrical engineering [ 14 ]. For automotive components, Ti-based alloys can be used as connecting rods, segments, part of the engine, chassis, pistons, valves, cranks and shafts [ 15 , 16 , 17 , 18 ].…”