Influence of Cooling Rate on Microsegregation Behavior of Magnesium Alloys

Table 6

Effective partition coefficient for major alloying elements in the investigated alloys.

Location	AZ91D		AM60B		AE44
	𝐾Al	𝐾Zn	𝐾Al	𝐾Mn	𝐾Al	𝐾Ce	𝐾La
1
Lowest	0.42	0.04	0.48	0.03	0.29	0.02	0.02
Highest	0.58	0.50	0.68	0.73	0.42	0.14	0.15
Average	0.53	0.21	0.56	0.30	0.34	0.07	0.08
2
Lowest	0.42	0.03	0.39	0.01	0.17	0.02	0.00
Highest	0.63	0.40	0.49	0.57	0.40	0.18	0.22
Average	0.51	0.15	0.46	0.33	0.30	0.06	0.05
3
Lowest	0.44	0.08	0.36	0.03	0.31	0.02	0.02
Highest	0.70	0.40	0.60	0.52	0.54	0.10	0.10
Average	0.57	0.19	0.45	0.29	0.40	0.05	0.05
4
Lowest	0.32	0.06	0.30	0.01	0.21	0.01	0.01
Highest	0.56	0.36	0.47	0.23	0.33	0.13	0.07
Average	0.41	0.18	0.36	0.11	0.27	0.03	0.04
5
Lowest	0.29	0.01	0.35	0.02	0.29	0.01	0.01
Highest	0.44	0.25	0.51	0.54	0.36	0.07	0.08
Average	0.39	0.10	0.40	0.28	0.33	0.03	0.03
6
Lowest	0.33	0.03	0.31	0.01	0.19	0.01	0.02
Highest	0.56	0.29	0.55	0.62	0.25	0.05	0.05
Average	0.43	0.12	0.41	0.29	0.23	0.03	0.03

∗∗Using FactSage software: 𝐾_Al=0.35, 𝐾_Zn=0.09, 𝐾_Ce=0.0193, 𝐾_La=0.036, and 𝐾_Mn=1.10.