Effects of Moulding Sand Permeability and Pouring Temperatures on Properties of Cast 6061 Aluminium Alloy

Table 5

XRD analysis of scrap Al sample.

	Peak	Diffraction angle 2θ	Grain size (Å)	Crystal structures	Phases
1	0.20	23.0124	0.39	Triclinic	Al2Si4O10
2	0.25	27.6803	0.05	Tetragonal	MgO·Al2O3
3	0.15	32.2546	0.43	Triclinic	Al2Si4O10
4	1.80	37.8674	0.14	Tetragonal	CuAl2
5	0.95	46.1875	0.24	Monoclinic	AlCu
6	0.10	46.7107	0.60	Monoclinic	SiO2
7	0.35	51.2504	0.43	Triclinic	Al2Si4O10
8	0.15	56.0038	0.60	Monoclinic	SiO2
9	0.20	59.7511	0.47	Cubic	CuAl2
10	0.35	64.7793	0.10	Monoclinic	AlCu
11	0.20	68.2625	0.31	Triclinic	Al2Si4O10