Pb-Al
合金定向凝固组织形成过程
李彦强, 赵九洲, 江鸿翔, 何杰
Microstructure Formation in Directionally Solidified Pb-Al Alloy
LI Yanqiang, ZHAO Jiuzhou, JIANG Hongxiang, HE Jie
表1
Pb-Al体系的热物性参数
[
24
]
Table 1
Thermophysical property parameters of Pb-Al system
[
24
]
Parameter
Value
Unit
Dynamic viscosity of Pb,
η
m
0.0004636 × exp(1036.7 /
T
)
Pa·s
Thermal conductivity of liquid Pb,
k
m
15.88
W·m
-1
·K
-1
Thermal conductivity of Al
2
O
3
crucible,
k
c
r
u
10
W·m
-1
·K
-1
Density of liquid Pb,
ρ
m
10678
kg·m
-3
Density of solid Al,
ρ
β
2700
kg·m
-3
Specific heat of liquid Pb,
c
p
m
127.61
J·kg
-1
·K
-1
Latent heat of solidification of Pb,
L
24700
J·kg
-1