Microstructure and Stress Rupture Properties of K417G Superalloy at Different Hot Isostatic Pressing Temperatures

Table 3

Dendrite compositions of the K417G superalloy in as-cast, HIP1175, HIP1185, and HIP1195 conditions were determined by EPMA (wt%), as well as microsegregation coefficients, k′, the ratio of the concentration (wt%) of an element in the dendrite core to that in the interdendritic region.

Specimen	Region	Ni	Co	Cr	Al	Ti	Mo	V
As-cast	Dendrite	68.56	10.71	8.71	5.87	3.07	2.08	0.84
	Interdendrite	66.85	10.28	10.24	5.03	3.83	2.39	0.71
	k′	1.03	1.04	0.85	1.17	0.80	0.87	1.18
HIP1175	Dendrite	68.59	10.39	9.01	5.37	3.50	2.29	0.81
	Interdendrite	67.28	9.98	9.90	5.16	3.78	2.39	0.78
	k′	1.02	1.04	0.91	1.04	0.93	0.96	1.04
HIP1185	Dendrite	67.09	10.85	9.32	5.44	3.38	2.30	0.83
	Interdendrite	66.92	10.55	9.83	5.28	3.42	2.39	0.81
	k′	1.00	1.03	0.95	1.03	0.99	0.96	1.02
HIP1195	Dendrite	68.06	10.89	9.15	5.62	3.36	2.68	0.72
	Interdendrite	67.74	10.34	9.73	5.40	3.40	2.80	0.71
	k′	1.00	1.05	0.94	1.04	0.99	0.96	1.01