Thermal Stability of Cryomilled Al-Mg-Er Powders

Table 5

XRD results and TEM grain size for the 0.5 Er annealed powders.

Powder sample	Lattice parameter (Å)	Mg in matrix (at.%)	Grain size, XRD (nm)	Microstrain (%)	Correlation coefficient,	Grain size, TEM (nm)	Number of grains,
Milled	4.0647 ± 0.0004	4.87	19	0.106	0.93	17 ± 0	657
150°C	4.0562 ± 0.0025	2.72	21	0.066	0.89	22 ± 1	468
250°C	4.0519 ± 0.0004	1.62	23	0.054	0.94	18 ± 1	372
400°C	4.0530 ± 0.0006	1.90	27	0.06	0.97	18 ± 1	328
450°C	4.0544 ± 0.0006	2.26	35	0.089	0.93	32 ± 2	301
500°C	4.0537 ± 0.0005	2.08	41	0.078	0.85	54 ± 4	300