Diffusion interaction between Al and Mg controlled by a high magnetic field

Growth behavior of intermetallic compounds during reactive diffusion between aluminum alloy 1060 and magnesium at 573–673 K

“…The interdiffusion experiments were carried out at temperatures of T = 573, 623, and 673 K for various times (1,2,5,10,20, and 50 h depending on the temperature), under a protective argon (Ar) atmosphere. The diffusion couples were annealed at the desired temperature in a tube furnace with the temperature control of ±2 K. The temperature of the sample was continuously monitored with the help of an external thermocouple and it was observed that the re-stabilization of the set temperature was achieved within 10-15 min after placing the sample inside the preheated and stabilized furnace.…”

“…The growth rate constants and activation energy of this transformation can be determined from the average intermetallic layer thickness as a function of diffusion time [31,32]. When reactive diffusion happens during isothermal annealing, the mean thickness of each diffusion layer, (l i ), is proportional to a power function of the annealing time (t) by the following equation [19,20,31,32]:…”

“…[19,20]. The growth of the c layer was controlled by grain boundary diffusion and lattice diffusion without the application of a magnetic field, but only controlled by lattice diffusion with the application of strong magnetic field [19,20]. The introduction of a variety of interlayers, including Ce [11], Zn [12], and Ag [21], can improve mechanical properties of the Al/Mg joint by preventing the formation of brittle Al-Mg compounds [11][12][13]21].…”

“…The effect of a high magnetic field on diffusion mechanism of Al/ Mg couple was reported in Refs. [19,20]. The growth of the c layer was controlled by grain boundary diffusion and lattice diffusion without the application of a magnetic field, but only controlled by lattice diffusion with the application of strong magnetic field [19,20].…”

“…Consequently, poor mechanical properties of the Al/ Mg joint are displayed [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23]. U-Mo has little effect on the diffusion behavior between Al and Mg, since Mg has negligible metallurgical interactions with either U or Mo [3,7].…”