Paul Scherrer Institut • 5232 Villigen PSI 2nd High Power Targetry Workshop, Oak Ridge 10-14.10.2005 Y.Dai/1

SSINQ INQ TTarget arget IIrradiation rradiation PProgram rogram STIPSTIP

Yong DaiYong Dai

Spallation Neutron Source DivisionPaul Scherrer Institut, 5232 Villigen PSI, Switzerland

2nd High Power Targetry Workshop2nd High Power Targetry WorkshopOak Ridge, Oct. 10-14, 2005Oak Ridge, Oct. 10-14, 2005

Paul Scherrer Institut • 5232 Villigen PSI 2nd High Power Targetry Workshop, Oak Ridge 10-14.10.2005 Y.Dai/2

AcknowledgementAcknowledgement

PSI:PSI: X. Jia, R. Thermer, D. Hamaguchi, B. LongX. Jia, R. Thermer, D. Hamaguchi, B. Long L. NiL. Ni, K. Geissmann, M. Häffeli, H. Heyke, K. Geissmann, M. Häffeli, H. Heyke F. Groeschel, W. Wagner F. Groeschel, W. Wagner Hotlab membersHotlab members

CEA:CEA: J. HenryJ. HenryFZJ:FZJ: G.S. Bauer, J. Chen, F. Carsughi, H. UllmaierG.S. Bauer, J. Chen, F. Carsughi, H. Ullmaier JAERI:JAERI: K. KikuchiK. KikuchiLANL:LANL: S.A. Maloy, M.R. JamesS.A. Maloy, M.R. JamesORNL:ORNL: L.K. Mansur, K. Farrell L.K. Mansur, K. Farrell Others:Others: M.S. Wechsler, W. Lu, Y. Foucher, M.S. Wechsler, W. Lu, Y. Foucher, H. HouH. Hou

Paul Scherrer Institut • 5232 Villigen PSI 2nd High Power Targetry Workshop, Oak Ridge 10-14.10.2005 Y.Dai/3

IntroductionIntroduction

OutlineOutline

IrradiationIrradiation

Few resultsFew results

OutlookOutlook

Paul Scherrer Institut • 5232 Villigen PSI 2nd High Power Targetry Workshop, Oak Ridge 10-14.10.2005 Y.Dai/4

IntroductiIntroductionon

SINQ Target Irradiation Program (STIP) was setup by G.S. BauerSINQ Target Irradiation Program (STIP) was setup by G.S. Bauer in 1996 in Oak Ridge, joined by CEA, FZJ, JAERI, LANL andin 1996 in Oak Ridge, joined by CEA, FZJ, JAERI, LANL and ORNL to irradiated test samples in SINQ (solid) targets. ORNL to irradiated test samples in SINQ (solid) targets.

Now, the collaboration has been greatly enlarged, including Now, the collaboration has been greatly enlarged, including CIAE(ADS),CSNS, CRPP/EPFL (fusion), LWV/PSI (Gen-4), CIAE(ADS),CSNS, CRPP/EPFL (fusion), LWV/PSI (Gen-4), UCSB (fusion). UCSB (fusion).

The goal: -- to establish necessary data base of mechanical propertiesThe goal: -- to establish necessary data base of mechanical properties of different structural and target materials; of different structural and target materials; -- to understand the changes in structural and target materials -- to understand the changes in structural and target materials after irradiation under spallation spectrum in different after irradiation under spallation spectrum in different environments in wide temperature range. environments in wide temperature range.

Paul Scherrer Institut • 5232 Villigen PSI 2nd High Power Targetry Workshop, Oak Ridge 10-14.10.2005 Y.Dai/5

IntroductiIntroductionon

Year Preparation Irradiation Retrieving / Shipping PIE

1997 STIP-I

1998 STIP-I

1999 STIP-II STIP-I

2000 STIP-II STIP-I

2001 STIP-III STIP-II STIP-I STIP-I

2002 STIP-III STIP-II STIP-I

2003 STIP-IV STIP-III STIP-II STIP-I, -II

2004 STIP-IV STIP-II STIP-I, -II

2005 STIP-V STIP-IV STIP-III STIP-I, -II

Activities up to dateActivities up to date

Paul Scherrer Institut • 5232 Villigen PSI 2nd High Power Targetry Workshop, Oak Ridge 10-14.10.2005 Y.Dai/6

IrradiationIrradiation

5

11

14

Tensile, Fatigue, TEMPb-Bi CapsulesPb-Bi CapsulesHg Capsules

Tensile, Fatigue, TEMTensile, Fatigue, TEMBend bar, Tensile, TEM

Bend bar, Tensile, TEM

Charpy samples

Charpy samplesCharpy samples

Charpy samplesBend bar, Tensile, TEMCarbon fibre samplesFatigue, SANS, TAP

9

DY,13.12.99

Including samples

14

1213

1110

CT, Tal-clad W, SiC SANS

Thermocouple

12.8

22.0

8

Tensile, TEM

A

1

3

C

6

12

9

8

B

2

4

7

B

4

78

65

23

1C

A

Rod

13

10

T1

R1 R2

R3

STIP - II (Target - 4)

Proton beam

Dimensions in mm

Normal target rod (Pb clad with SS316L)Specimen rod

Cooling water (D O)

AlMg container

Zircaly-2 frame

2

3

Paul Scherrer Institut • 5232 Villigen PSI 2nd High Power Targetry Workshop, Oak Ridge 10-14.10.2005 Y.Dai/7

IrradiationIrradiation

Paul Scherrer Institut • 5232 Villigen PSI 2nd High Power Targetry Workshop, Oak Ridge 10-14.10.2005 Y.Dai/8

IrradiationIrradiation

Paul Scherrer Institut • 5232 Villigen PSI 2nd High Power Targetry Workshop, Oak Ridge 10-14.10.2005 Y.Dai/9

IrradiationIrradiation

STIP-I:STIP-I: More than 1200 samples were irradiated up to More than 1200 samples were irradiated up to 12 dpa / 1100 appm He at <=360°C . 12 dpa / 1100 appm He at <=360°C .

STIP-II:STIP-II: More than 2000 samples were irradiated up to More than 2000 samples were irradiated up to 20 dpa / 1800 appm He at <=430°C . 20 dpa / 1800 appm He at <=430°C .

STIP-III:STIP-III: About 800 samples were irradiated up to About 800 samples were irradiated up to 21.8 dpa / 1950 appm He at <=~500°C. at <=~500°C.

STIP-IV:STIP-IV: About 1100 samples are being irradiated up to About 1100 samples are being irradiated up to 20 dpa at <=~600°C. at <=~600°C.

Paul Scherrer Institut • 5232 Villigen PSI 2nd High Power Targetry Workshop, Oak Ridge 10-14.10.2005 Y.Dai/10

IrradiationIrradiation

Materials Tensile

Tmax (°C)

Bend/Fracture

Tmax (°C)

Fatigue

Tmax (°C)

Impact

Tmax (°C)

TEM

Tmax (°C)

FM steels

FM steels ODS

430

450

400

450

400

400

350

400

450

450

SS 316L (LN) 400 300 300 430

Inconel 718 400 300 300 400

W, W-alloys 350 400

Ta 400 300 300 250 400

C-C/SiC, SiC/SiC 300

Zircaloy-2 350 300 350

Au, Pt 400 300 400

AlMg3 60 60

Materials / specimens irradiated up to ~6x10Materials / specimens irradiated up to ~6x1025 25 p/mp/m22 and and 9x109x102525 n/m n/m22 (~22 dpa / 2000 appm He in steels) (~22 dpa / 2000 appm He in steels)

Others: Au, Nb, Cu, Ni, Fe, Ti, Al, discs; Ta-clad-W rods; Graphite samples Pb, PbBi, Hg

Paul Scherrer Institut • 5232 Villigen PSI 2nd High Power Targetry Workshop, Oak Ridge 10-14.10.2005 Y.Dai/11

Few resultsFew resultsFracture toughness of FM steels irradiated in STIP-I

Jia & Dai, IWSMT-7, Thun, 2005, to be published in JNM.

-1 0 1 2 3 4 5 6 7 8 9 100

50

100

150

200

250

300

T91 Ttest=RT

T91 Ttest=250°C

F82H Ttest=Tirr

Optimax Ttest=Tirr

T91, Maloy

Tirr=250oC

Tirr=170oC

K J

Q (M

Pa

/m1/2)

Dose (dpa)

Tirr=100oC

Paul Scherrer Institut • 5232 Villigen PSI 2nd High Power Targetry Workshop, Oak Ridge 10-14.10.2005 Y.Dai/12

Few resultsFew resultsDBTT shift of FM steels irradiated in STIP-I and -II

0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 300

50

100

150

200

250

300

DB

TT C

VN (

°C)

SP

DB

TT S

P (

°C)

Displacement (dpa)

0

100

200

300

400

500

600

700F82H T91 Optimax Optifer-V T91, neutron

irradiation

Ti<380°CCVN

Neutron irradiation data from Klueh et al, J. Nucl. Mater. 218 (1995) 151.

Paul Scherrer Institut • 5232 Villigen PSI 2nd High Power Targetry Workshop, Oak Ridge 10-14.10.2005 Y.Dai/13

Few resultsFew resultsTensile curves of SA 316F irradiated in STIP-I, - JAERI

Saito, et al. JNM 343 (2005) 253.

Paul Scherrer Institut • 5232 Villigen PSI 2nd High Power Targetry Workshop, Oak Ridge 10-14.10.2005 Y.Dai/14

Few resultsFew resultsTensile curves of AlMg3 irradiated in STIP-I

Dai & Hamaguchi, JNM 343 (2005) 184

-2 0 2 4 6 8 10 12 14 16 18 20 22 240

50

100

150

200

250

300

350 Ti<60°C

Tt=22°C

2.7 dpa 3.5 dpa

3.2 dpa

0.7 dpa

Unirr.

Strain (%)

Str

ess

[MP

a]

Paul Scherrer Institut • 5232 Villigen PSI 2nd High Power Targetry Workshop, Oak Ridge 10-14.10.2005 Y.Dai/15

Few resultsFew resultsTEM observations on microstructure in F82H steel TEM observations on microstructure in F82H steel

20.3 dpa, 1790 appm He, Ti = 400±50ºC

Jia & Dai, IWSMT-7, Thun, 2005, to be published in JNM.

Paul Scherrer Institut • 5232 Villigen PSI 2nd High Power Targetry Workshop, Oak Ridge 10-14.10.2005 Y.Dai/16

Few resultsFew resultsFM steels and SS 316 irradiated in STIP-I

50 100 150 200 250 300 3500.0

0.2

0.4

0.6

0.8

1.0

Temperature dependence of measured H concentrationR

atio

Cm

eas / C

cal

Irradiation Temperature (°C)

Dai et al, JNM 318 (2003) 167

Paul Scherrer Institut • 5232 Villigen PSI 2nd High Power Targetry Workshop, Oak Ridge 10-14.10.2005 Y.Dai/17

Few resultsFew results

Inspection on STIP-II Pb-Bi RodInspection on STIP-II Pb-Bi Rod

Before irradiation

After irradiation ( max dose: 19 dpa)

Target Rod B:It contains a PbBi (about 38 g) filled T91 capsule. Inside PbBi there are about 50 test samples for studying irradiation assisted corrosion effects of PbBi on different kinds of materials.

Paul Scherrer Institut • 5232 Villigen PSI 2nd High Power Targetry Workshop, Oak Ridge 10-14.10.2005 Y.Dai/18

Few resultsFew resultsInspection on STIP-II Hg RodInspection on STIP-II Hg Rod

Before irradiation

After irradiation ( max dose: 19 dpa)

Target Rod A:It contains three Hg (about 19 g in total) filled SS 316 L capsules for studying irradiation assisted corrosion effects of Hg on two kinds of steels.

Hg level

outer 316 L Capsule(0.375 mm thick)

Hg

Ag coil filled space

316 L TubeHe

inner 316 L Capsule (0.375 mm thick)

stressed 316L or 9Cr-2W steel capsule (0.25 mm thick)

Al or Cu

Steel sample

123

123

Paul Scherrer Institut • 5232 Villigen PSI 2nd High Power Targetry Workshop, Oak Ridge 10-14.10.2005 Y.Dai/19

OutlookOutlook

Materials Tensile

Tmax (°C)

Bend/Fracture

Tmax (°C)

Fatigue

Tmax (°C)

Impact

Tmax (°C)

TEM

Tmax (°C)

FM steels 500 500 450 500

FM steels ODS 600 600 400 450

SS 316L (LN) 600 600

Inconel 718 600 600

W 800

C-C/SiC, SiC/SiC

700

STIP-V to be irradiated in 2007 and 2008 to ~25 dpa (in steel)STIP-V to be irradiated in 2007 and 2008 to ~25 dpa (in steel)

Paul Scherrer Institut • 5232 Villigen PSI 2nd High Power Targetry Workshop, Oak Ridge 10-14.10.2005 Y.Dai/20

OutlookOutlookForeseen STIP data Foreseen STIP data

100

200

600

500

400

300

00

800

700

3020105 15 25

Te

mp

era

ture

(°C

)

Dose (dpa, in steels)

20082008

Paul Scherrer Institut • 5232 Villigen PSI 2nd High Power Targetry Workshop, Oak Ridge 10-14.10.2005 Y.Dai/21

OutlookOutlookForeseen STIP data Foreseen STIP data

100

200

600

500

400

300

00

800

700

3020105 15 25

Te

mp

era

ture

(°C

)

Dose (dpa, in steels)

20112011

2011