SINQ Target Irradiation Program STIP Yong Dai Spallation

Acknowledgement PSI: X. Jia, R. Thermer, D. Hamaguchi, B. Long L. Ni, K. Geissmann,

Outline Ø Introduction Ø Irradiation Ø Few results Ø Outlook Paul Scherrer Institut •

Introduction ² SINQ Target Irradiation Program (STIP) was setup by G. S. Bauer in

Introduction Activities up to date Year 1997 1998 1999 2000 2001 2002 2003 2004

Irradiation Paul Scherrer Institut • 5232 Villigen PSI 2 nd High Power Targetry Workshop,

Irradiation STIP-I: More than 1200 samples were irradiated up to 12 dpa / 1100

Irradiation Materials / specimens irradiated up to ~6 x 1025 p/m 2 and 9

Few results Fracture toughness of FM steels irradiated in STIP-I Jia & Dai, IWSMT-7,

Few results DBTT shift of FM steels irradiated in STIP-I and -II Neutron irradiation

Few results Tensile curves of SA 316 F irradiated in STIP-I, - JAERI Saito,

Few results Tensile curves of Al. Mg 3 irradiated in STIP-I Dai & Hamaguchi,

Few results TEM observations on microstructure in F 82 H steel 20. 3 dpa,

Few results FM steels and SS 316 irradiated in STIP-I Dai et al, JNM

Few results Inspection on STIP-II Pb-Bi Rod Before irradiation After irradiation ( max dose:

Few results Inspection on STIP-II Hg Rod Before irradiation 3 After irradiation ( max

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

Outlook Foreseen STIP data 800 Temperature (°C) 700 600 500 400 300 2008 200

Outlook Foreseen STIP data 800 Temperature (°C) 700 600 500 400 300 112011 0

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SINQ Target Irradiation Program STIP Yong Dai Spallation Neutron Source Division Paul Scherrer Institut, 5232 Villigen PSI, Switzerland 2 nd High Power Targetry Workshop Oak Ridge, Oct. 10 -14, 2005 Paul Scherrer Institut • 5232 Villigen PSI 2 nd High Power Targetry Workshop, Oak Ridge 10 -14. 10. 2005 Y. Dai/1

Acknowledgement PSI: X. Jia, R. Thermer, D. Hamaguchi, B. Long L. Ni, K. Geissmann, M. Häffeli, H. Heyke F. Groeschel, W. Wagner Hotlab members CEA: J. Henry FZJ: G. S. Bauer, J. Chen, F. Carsughi, H. Ullmaier JAERI: K. Kikuchi LANL: S. A. Maloy, M. R. James ORNL: L. K. Mansur, K. Farrell Others: M. S. Wechsler, W. Lu, Y. Foucher, H. Hou Paul Scherrer Institut • 5232 Villigen PSI 2 nd High Power Targetry Workshop, Oak Ridge 10 -14. 10. 2005 Y. Dai/2

Outline Ø Introduction Ø Irradiation Ø Few results Ø Outlook Paul Scherrer Institut • 5232 Villigen PSI 2 nd High Power Targetry Workshop, Oak Ridge 10 -14. 10. 2005 Y. Dai/3

Introduction ² SINQ Target Irradiation Program (STIP) was setup by G. S. Bauer in 1996 in Oak Ridge, joined by CEA, FZJ, JAERI, LANL and ORNL to irradiated test samples in SINQ (solid) targets. ² Now, the collaboration has been greatly enlarged, including CIAE(ADS), CSNS, CRPP/EPFL (fusion), LWV/PSI (Gen-4), UCSB (fusion). ² The goal: -- to establish necessary data base of mechanical properties of different structural and target materials; -- to understand the changes in structural and target materials after irradiation under spallation spectrum in different environments in wide temperature range. Paul Scherrer Institut • 5232 Villigen PSI 2 nd High Power Targetry Workshop, Oak Ridge 10 -14. 10. 2005 Y. Dai/4

Introduction Activities up to date Year 1997 1998 1999 2000 2001 2002 2003 2004 2005 Preparation STIP-III STIP-IV STIP-V Paul Scherrer Institut • 5232 Villigen PSI Irradiation Retrieving / Shipping PIE STIP-II STIP-III STIP-IV STIP-II STIP-III 2 nd High Power Targetry Workshop, Oak Ridge 10 -14. 10. 2005 STIP-I, -II STIP-I, -II Y. Dai/5

Irradiation Paul Scherrer Institut • 5232 Villigen PSI 2 nd High Power Targetry Workshop, Oak Ridge 10 -14. 10. 2005 Y. Dai/6

Irradiation Paul Scherrer Institut • 5232 Villigen PSI 2 nd High Power Targetry Workshop, Oak Ridge 10 -14. 10. 2005 Y. Dai/7

Irradiation Paul Scherrer Institut • 5232 Villigen PSI 2 nd High Power Targetry Workshop, Oak Ridge 10 -14. 10. 2005 Y. Dai/8

Irradiation STIP-I: More than 1200 samples were irradiated up to 12 dpa / 1100 appm He at <=360°C. STIP-II: More than 2000 samples were irradiated up to 20 dpa / 1800 appm He at <=430°C. STIP-III: About 800 samples were irradiated up to 21. 8 dpa / 1950 appm He at <=~500°C. STIP-IV: About 1100 samples are being irradiated up to 20 dpa at <=~600°C. Paul Scherrer Institut • 5232 Villigen PSI 2 nd High Power Targetry Workshop, Oak Ridge 10 -14. 10. 2005 Y. Dai/9

Irradiation Materials / specimens irradiated up to ~6 x 1025 p/m 2 and 9 x 1025 n/m 2 (~22 dpa / 2000 appm He in steels) Materials Tensile Bend/Fracture Tmax (°C) Fatigue Tmax (°C) Impact Tmax (°C) TEM Tmax (°C) 350 400 450 FM steels ODS 430 450 400 400 SS 316 L (LN) 400 300 430 Inconel 718 400 300 400 W, W-alloys 350 Ta 400 C-C/Si. C, Si. C/Si. C 400 300 250 400 300 Zircaloy-2 350 300 350 Au, Pt 400 300 400 Al. Mg 3 60 60 Others: Au, Nb, Cu, Ni, Fe, Ti, Al, discs; Ta-clad-W rods; Graphite samples Pb, Pb. Bi, Hg Paul Scherrer Institut • 5232 Villigen PSI 2 nd High Power Targetry Workshop, Oak Ridge 10 -14. 10. 2005 Y. Dai/10

Few results Fracture toughness of FM steels irradiated in STIP-I Jia & Dai, IWSMT-7, Thun, 2005, to be published in JNM. Paul Scherrer Institut • 5232 Villigen PSI 2 nd High Power Targetry Workshop, Oak Ridge 10 -14. 10. 2005 Y. Dai/11

Few results DBTT shift of FM steels irradiated in STIP-I and -II Neutron irradiation data from Klueh et al, J. Nucl. Mater. 218 (1995) 151. Paul Scherrer Institut • 5232 Villigen PSI 2 nd High Power Targetry Workshop, Oak Ridge 10 -14. 10. 2005 Y. Dai/12

Few results Tensile curves of SA 316 F irradiated in STIP-I, - JAERI Saito, et al. JNM 343 (2005) 253. Paul Scherrer Institut • 5232 Villigen PSI 2 nd High Power Targetry Workshop, Oak Ridge 10 -14. 10. 2005 Y. Dai/13

Few results Tensile curves of Al. Mg 3 irradiated in STIP-I Dai & Hamaguchi, JNM 343 (2005) 184 Paul Scherrer Institut • 5232 Villigen PSI 2 nd High Power Targetry Workshop, Oak Ridge 10 -14. 10. 2005 Y. Dai/14

Few results TEM observations on microstructure in F 82 H 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 2 nd High Power Targetry Workshop, Oak Ridge 10 -14. 10. 2005 Y. Dai/15

Few results FM steels and SS 316 irradiated in STIP-I Dai et al, JNM 318 (2003) 167 Paul Scherrer Institut • 5232 Villigen PSI 2 nd High Power Targetry Workshop, Oak Ridge 10 -14. 10. 2005 Y. Dai/16

Few results Inspection on STIP-II Pb-Bi Rod Before irradiation After irradiation ( max dose: 19 dpa) Target Rod B: It contains a Pb. Bi (about 38 g) filled T 91 capsule. Inside Pb. Bi there about 50 test samples for studying irradiation assisted corrosion effects of Pb. Bi on different kinds of materials. Paul Scherrer Institut • 5232 Villigen PSI 2 nd High Power Targetry Workshop, Oak Ridge 10 -14. 10. 2005 Y. Dai/17

Few results Inspection on STIP-II Hg Rod Before irradiation 3 After irradiation ( max dose: 19 dpa) 3 2 1 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. Paul Scherrer Institut • 5232 Villigen PSI 2 nd High Power Targetry Workshop, Oak Ridge 10 -14. 10. 2005 Y. Dai/18

Outlook STIP-V to be irradiated in 2007 and 2008 to ~25 dpa (in steel) Materials Tensile Bend/Fracture Tmax (°C) Fatigue Tmax (°C) Impact Tmax (°C) TEM Tmax (°C) FM steels 500 450 500 FM steels ODS 600 400 450 SS 316 L (LN) 600 Inconel 718 600 W 800 C-C/Si. C, Si. C/Si. C Paul Scherrer Institut • 5232 Villigen PSI 700 2 nd High Power Targetry Workshop, Oak Ridge 10 -14. 10. 2005 Y. Dai/19

Outlook Foreseen STIP data 800 Temperature (°C) 700 600 500 400 300 2008 200 100 0 0 5 10 15 20 25 30 Dose (dpa, in steels) Paul Scherrer Institut • 5232 Villigen PSI 2 nd High Power Targetry Workshop, Oak Ridge 10 -14. 10. 2005 Y. Dai/20

Outlook Foreseen STIP data 800 Temperature (°C) 700 600 500 400 300 112011 0 2 200 100 0 0 5 10 15 20 25 30 Dose (dpa, in steels) Paul Scherrer Institut • 5232 Villigen PSI 2 nd High Power Targetry Workshop, Oak Ridge 10 -14. 10. 2005 Y. Dai/21