Experimental Diffusion Research on BCC Ti-Mn Binary and Ti-Al-Mn Ternary Alloys

Huang, X. ; Tan, J. ; Guo, Y. ; Xu, G. ; Cui, Y.

Resumen: Interdiffusion in the BCC phase of the Ti-Mn binary and Ti-Al-Mn ternary systems was investigated between 1273 and 1473 K by applying the diffusion-couple technique. The local chemical compositions within the interdiffusion zone of the diffusion couples were acquired by electron probe microanalysis (EPMA). The raw composition profiles were then analytically represented by the error function expansion, which allow the ternary inter- and impurity diffusivities to be appropriately extracted by the Whittle–Green and generalized Hall methods, respectively. It was demonstrated that, all four diffusion coefficients D~ijk (i, j = Al, Mn), both main and cross ones, increase with increasing the composition of diffusing specie at 1473 K, whereas at 1273 K D~MnMnTi and D~MnAlTi are enhanced by the addition of diffusing specie Mn but D~AlAlTi and D~AlMnTi are in weak dependence with the Al content. A complete comparison among seven Ti-Al-X (Ni, Co, Fe, Mn, Cr, V and Mo) ternary systems reveals that the order of the average main interdiffusion coefficients D~XXTi¯ (X = Ni, Co, Fe, Mn, Cr, V and Mo) exhibits DNi > DCo > DFe > DMn > DCr > DV > DMo.

Idioma: Inglés

DOI: 10.1007/s11669-018-0675-7

Año: 2018

Publicado en: JOURNAL OF PHASE EQUILIBRIA AND DIFFUSION 39, 5 (2018), 702-713
ISSN: 1547-7037

Factor impacto JCR: 1.421 (2018)

Categ. JCR: METALLURGY & METALLURGICAL ENGINEERING rank: 36 / 76 = 0.474 (2018) - Q2 - T2
Categ. JCR: MATERIALS SCIENCE, MULTIDISCIPLINARY rank: 217 / 293 = 0.741 (2018) - Q3 - T3
Categ. JCR: CHEMISTRY, PHYSICAL rank: 119 / 148 = 0.804 (2018) - Q4 - T3

Factor impacto SCIMAGO: 0.596 - Condensed Matter Physics (Q2) - Metals and Alloys (Q2) - Materials Chemistry (Q2)

Tipo y forma: Article (Published version)