PSI - Issue 8

V. Giannella et al. / Procedia Structural Integrity 8 (2018) 318–331 V. Giannella / Structural Integrity Procedia 00 (2017) 000 – 000

323

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the orthotropic thermal conductivities of sigraflex® layers, modeled just as an interface condition between CuCrZr heat sinks and graphite tiles, are provided: (K 11 , K 22 , K 33 ) = (100, 3, 100) W/m/°C.

Table 2. CuCrZr thermomechanical properties. T [°C] 20 100 200

300

400

600

700

E [GPa]

130 297 1.59

-

120 268 1.68

-

110 222 1.78

95

-

σYS [MPa] α [1E -5/°C] K [kW/m/°C] cp [J/kg/°C] ρ [kg/mm3]

286 1.63

246 1.73

161 1.88

125 1.94

0.379

- - - -

0.351

- - - -

- - - -

0.372

388

- - -

- - -

473

8.92E-6

- -

ν [ -]

0.3

Table 3. Braze thermomechanical properties. T [°C] 20 100 200

300

400

600

700

E [GPa]

214.3

- -

- -

- -

183.3

- -

158.3

σYS [MPa] α [1E -5/°C] K [kW/m/°C] cp [J/kg/°C] ρ [kg/mm3]

300 1.59 0.01 388

220 1.78

190 1.94

1.63

1.68

1.73

1.88

- - - -

- - - -

- - - -

- - - -

- - - -

-

473

8.9E-6

- -

ν [ -]

0.3

Table 4. SS316L thermomechanical properties.

T [°C]

20

100

200

300

400

500

700

E [GPa]

158

152.7

146.15

139.04 194.14

- -

133.51 186.69

- -

σYS [MPa] α [1E -5/°C] K [kW/m/°C] cp [J/kg/°C] ρ [kg/mm3]

208.38

203.83

202.9

1.59

1.63

1.68

1.73

1.78

1.88

1.94

0.015

- - - -

- - - -

- - - -

0.021

- - - -

- - - -

472

520

7.96E-6

- -

ν [ -]

0.3

Table 5. Graphite thermal properties. T [°C] 20 100

300

500

700

1000

2200

K [kW/m/°C] cp [J/kg/°C] ρ [kg/mm3]

0.116

0.083

0.052

0.039

0.031 1830

0.029 1920

0.017

672

- -

- -

- -

- -

1.83E-6

-

-

Table 6. Sigraflex® thermal properties. T [°C] 20

800

1000

cp [J/kg/°C] ρ [kg/mm3]

740

1850

1950

1.1E-6

-

-