Oral presentation

[2H01-04] Reactor Pressure Vessel

Thu. Sep 12, 2019 10:45 AM - 11:55 AM Room H (Common Education Bildg. 2F B21)

Chair:Katsuhiko Fujii(INSS)

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10:45 AM - 11:00 AM

[2H01] FY2018 Investigation for Improvement of Evaluation Method of Irradiation Effects on Reactor Pressure Vessel and Core Internals

(1)Through-wall fracture toughness distribution of decommissioned Zion Unit 1 reactor pressure vessel steel

*Masato Yamamoto¹, Tomohiro Kobayashi¹ (1. CRIEPI)

11:00 AM - 11:15 AM

[2H02] FY2018 Investigation for Improvement of Evaluation Method of Irradiation Effects on Reactor Pressure Vessel and Core Internals

(2)Through-wall distributions of metallographic structure and hardness of decommissioned Zion Unit 1 reactor pressure vessel steel

*Kenji Nishida¹, Tomohiro Kobayashi¹ (1. CRIEPI)

11:15 AM - 11:30 AM

[2H03] FY2018 Investigation for Improvement of Evaluation Method of Irradiation Effects on Reactor Pressure Vessel and Core Internals

(3)Through-wall microstructural changes of decommissioned Zion Unit 1 reactor pressure vessel steel

*Tomohiro Kobayashi¹, Kenji Nishida¹, Masato Yamamoto¹ (1. CRIEPI)

11:30 AM - 11:45 AM

[2H04] FY2018 Investigation for Improvement of Evaluation Method of Irradiation Effects on Reactor Pressure Vessel and Core Internals

(4)Correlation between microstructural changes and yield strength of test reactor irradiated austenitic stainless steels

*Yuichi Miyahara¹, Kenji Nishida¹, Siwei Chen¹ (1. CRIEPI)

Time reserved for Chair （11:45 AM - 11:55 AM）

Oral presentation

[2H05-08] Irradiation Effect 1

Thu. Sep 12, 2019 2:45 PM - 3:50 PM Room H (Common Education Bildg. 2F B21)

Chair:Hideo Watanabe(Kyushu Univ.)

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2:45 PM - 3:00 PM

[2H05] Evaluation of microstructural change in electron-irradiated low alloy steels by nonlinear ultrasonic method

*Atsuko Kojima¹, Katsuhiko Fujii¹, Hitoshi Isida¹, Koichiro Kawashima² (1. INSS, 2. Ultrasonic Materials Diagnosis Lab.)

3:00 PM - 3:15 PM

[2H06] Atom probe analysis of solute clusters in low alloy steels irradiated under tensile-stress condition

*Katsuhiko Fujii¹, Koji Fukuya¹, Jun Uzuhashi², Tadakatsu Ohkubo², Kazuhiro Hono² (1. INSS, 2. NIMS)

3:15 PM - 3:30 PM

[2H07] Influence of solute cluster on irradiation hearding in austenite steels

*Takaaki Mabuchi¹, Takeshi Doi², Ken-ichi Fukumoto¹, Katsuhiko Fujii³ (1. Univ. of Fukui, 2. KEPCO, 3. INSS)

3:30 PM - 3:45 PM

[2H08] Inhomogeneous Distribution of Ni and Si atoms in Solute Clusters in Irradiated Stainless Steels

*Dongyue Chen¹, Kenta Murakami², Kenji Dohi³, Kenji Nishida³, Liang Chen¹, Naoto Sekimura¹ (1. The University of Tokyo, 2. Nagaoka University of Technology, 3. Central Research Institute of Electric Power Industry)

Time reserved for Chair （3:45 PM - 3:50 PM）

Oral presentation

[2H09-14] Irradiation Effect 2

Thu. Sep 12, 2019 3:50 PM - 5:30 PM Room H (Common Education Bildg. 2F B21)

Chair:Hiroaki Abe(Univ. of Tokyo)

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3:50 PM - 4:05 PM

[2H09] Molecular Dynamics Simulation of Displacement Cascades in α-Fe

Dependence of Defect Production on PKA Energy

*Yuting Chen¹, Xiaoyong Ruan¹, Toshiki Nakasuji¹, Kazunori Morishita¹, Yoshiyuki Watanabe² (1. KYOTO UNIVERSITY, 2. QST)

4:05 PM - 4:20 PM

[2H10] Effects on Mn addition on dislocation loop formation in ferritic alloys

*Li Ranran¹, Hideo Watanabe¹, Farong Wan (1. Kyushu Univ.)

4:20 PM - 4:35 PM

[2H11] Hydrogen absorbing behavior in Zry-2 due to multi-ion irradiation

*Hideo Watanabe¹, Katuhito Takahashi^3,2, Yushiki Saita³ (1. RIAM, Kyushu Univ., 2. NFD, 3. Kyushu Univ.)

4:35 PM - 4:50 PM

[2H12] Effects of DPA and helium production on radiation damage microstructures etc. in irradiated austenitic stainless steels and ferritic steel

*Eiichi Wakai¹, Shigeru Takaya¹, Yuji Nagae¹, Tetsuya Hirade¹, Yoshinori Matsui¹, Shuhei Nogami², Akira Hasegawa², Kasumi Aoto¹ (1. JAEA, 2. Tohoku Univ.)

4:50 PM - 5:05 PM

[2H13] Effect of ion irradiation on dimensional changeg of concrete aggregates

*Kenta Murakami¹, Nhut Vu Luu¹, Hamza Samouh², Ippei Maruyama^2,3, Kiyoteru Suzuki⁴ (1. Nagaoka Univ. of Tech., 2. Nagoya Univ., 3. Univ. of Tokyo, 4. MRI)

5:05 PM - 5:20 PM

[2H14] Point defects production in ceria under high-energy electron irradiation by using in-situ cathodoluminescence

*Pooreun Seo¹, AKM Saiful Islam Bhuian^1,2, Jean-Marc Costantini³, Syo Matsumura¹, Kazuhiro Yasuda¹ (1. Kyushu University, 2. Bangladesh Atomic Energy Commission, 3. French Atomic Energy Commission)

Time reserved for Chair （5:20 PM - 5:30 PM）

Oral presentation

[2H15-16] Fracture Behavior

Thu. Sep 12, 2019 5:30 PM - 6:00 PM Room H (Common Education Bildg. 2F B21)

Chair:Kenji Nishida(CRIEPI)

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5:30 PM - 5:45 PM

[2H15] Long-Term SCC Initiation Tests of Alloy TT690 under Simulated PWR Primary Water Condition

*Takumi Terachi¹, Takuyo Yamada¹, Makie Okamoto¹, Koji Arioka¹ (1. INSS)

5:45 PM - 6:00 PM

[2H16] Study on physical mechanism in aging phenomenon of fuel debris

(2)Transition of total crack length by cyclic temperature fluctuation in solidified molten materials including uranium

*Seiya Suzuki¹, Kimihiko Yano¹, Nobuo Okamura¹, Masayuki Watanabe¹ (1. Japan Atomic Energy Agency)

Oral presentation

[3H01-06] Irradiation Embrittlement

Fri. Sep 13, 2019 9:30 AM - 11:10 AM Room H (Common Education Bildg. 2F B21)

Chair:Eiichi Wakai(JAEA)

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9:30 AM - 9:45 AM

[3H01] Evolution of crack propagation in nanoscale α-iron by molecular dynamics simulation

Dependence of crack size on the critical energy release rate of nano crack

*Xiaoyong Ruan¹, Yuting Chen¹, Toshiki Nakasuji¹, Kazunori Morishita¹ (1. Kyoto University)

9:45 AM - 10:00 AM

[3H02] Effect of irradiation defects on crack growth

*Kentaro Ono¹, Toshiki Nakasuji¹, Xiaoyong Ruan¹, Kazunori Morishita¹, Yoshiyuki Watanabe² (1. Kyoto Univ., 2. QST)

10:00 AM - 10:15 AM

[3H03] Modeling for Advanced Management of Irradiation Embrittlement of RPV Steels

*Toshiki Nakasuji¹, Kagehiro Usuda¹, Kentaro Ono¹, Kohei Mizuta¹, Yotaro Kakuda¹, Kazunori Morishita¹ (1. Kyoto Univ.)

10:15 AM - 10:30 AM

[3H04] Tensile fracture behavior at grain boundary in neutron-irradiated stainless steels (3)

Dose dependence and relationship with microstructure

*Terumitsu Miura¹, Katsuhiko Fujii¹, Koji Fukuya¹, Hitoshi Seto² (1. Instuitute of Nuclear Safety System, 2. Nippon Nuclear Fuel Development)

10:30 AM - 10:45 AM

[3H05] Study on Effects of Solute Atom Clusters on Stress Intensity Factor at A Crack Tip Studied by Discrete Dislocation Dynamics

Tomohisa Kumagai¹, *Akiyoshi Nomoto¹, Akiyuki Takahashi², Hayato Sugasawa² (1. Central Research Institute of Electric Power Industry, 2. Tokyo University of Science)

10:45 AM - 11:00 AM

[3H06] Improvement of current Japanese embrittlement trend curve based on Japanese RPV surveillance data

*Yoshinori Hashimoto¹, Akiyoshi Nomoto¹, Kenji Nishida¹ (1. CRIEPI)

Time reserved for Chair （11:00 AM - 11:10 AM）

Oral presentation

[3H07-09] Severe Acident

Fri. Sep 13, 2019 11:10 AM - 12:00 PM Room H (Common Education Bildg. 2F B21)

Chair:Yoshinori Hashimoto(CRIEPI)

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11:10 AM - 11:25 AM

[3H07] Effect of heating during the severe accident on the microstructure and the strength of LWR structural steels

(1)Experimental estimation on the change of microstructure and strength of the containment vessel steel during the severe accident

*Kento Takahashi¹, Takumi Hashimoto¹, Taro Fumimoto², Kouki Matukata¹, Shiro Jitukawa¹ (1. National Institute of Technology, Fukushima College, 2. Tokyo Institute of Technology)

11:25 AM - 11:40 AM

[3H08] Effect of heating during the severe accident on the microstructure and the strength of LWR structural steels

(2)Change of microstructure of austenitic alloys for the core internals by ion-irradiation and annealing

*Takumi Hashimoto¹, Kento Takahashi, Hayato Ueda, Shiro Jitsukawa (1. National Institute of Technology, Fukushima College)

11:40 AM - 11:55 AM

[3H09] Study on high temperature oxidation behavior of cladding in air/steam mixture

*Yoshiyuki Nemoto¹, Yoshiyuki Kaji¹ (1. JAEA)

Time reserved for Chair （11:55 AM - 12:00 PM）

Oral presentation

[3H10-12] ODS Steel

Fri. Sep 13, 2019 2:45 PM - 3:35 PM Room H (Common Education Bildg. 2F B21)

Chair:Shinichiro Yamashita(JAEA)

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Cancelled

2:45 PM - 3:00 PM

[3H10] Neutron irradiation effects on EB-welded Fe−12Cr−6Al ODS steel

*Jin Gao¹, Peng Song¹, Yen-Jui Huang¹, Kiyohiro Yabuuchi¹, Akihiko Kimura¹ (1. Kyoto Univ.)

3:00 PM - 3:15 PM

[3H11] Phase stability under ion-irradiation in ODS ferritic steels strengthened by different sorts of oxide particles

*Peng Song¹, Kiyohiro Yabuuchi¹, Akihiko Kimura¹ (1. Kyoto Univ.)

3:15 PM - 3:30 PM

[3H12] In-situ observations of instability of nano-oxide particles in ODS steel under electron irradiations at elevated temperatures

*Hiroaki ABE¹, Sun-Ryung Oh¹, Sho Kano¹, Huilong Yang¹, Tamaki Shibayama² (1. University of Tokyo, 2. Hokkaido University)

Time reserved for Chair （3:30 PM - 3:35 PM）

Oral presentation

[3H13-13] SiC

Fri. Sep 13, 2019 3:35 PM - 3:55 PM Room H (Common Education Bildg. 2F B21)

Chair:Takuya Nagasaka(NIFS)

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3:35 PM - 3:50 PM

[3H13] Response of C/BN Particle Dispersed SiC Materials to Ion Irradiation

*Bo Huang¹, Kanjiro Kawasaki¹, Fujio Shinoda¹, Tatsuya Hinoki¹ (1. Kyoto Univ.)

Time reserved for Chair （3:50 PM - 3:55 PM）

Sessions

V. Nuclear Fuel Cycle and Nuclear Materials » 502-1 Nuclear Materials, Degradation, Radiation Effects, and Related Technology

[2H01-04] Reactor Pressure Vessel

(1)Through-wall fracture toughness distribution of decommissioned Zion Unit 1 reactor pressure vessel steel

(2)Through-wall distributions of metallographic structure and hardness of decommissioned Zion Unit 1 reactor pressure vessel steel

(3)Through-wall microstructural changes of decommissioned Zion Unit 1 reactor pressure vessel steel

(4)Correlation between microstructural changes and yield strength of test reactor irradiated austenitic stainless steels

[2H05-08] Irradiation Effect 1

[2H09-14] Irradiation Effect 2

Dependence of Defect Production on PKA Energy

[2H15-16] Fracture Behavior

(2)Transition of total crack length by cyclic temperature fluctuation in solidified molten materials including uranium

[3H01-06] Irradiation Embrittlement

Dependence of crack size on the critical energy release rate of nano crack

Dose dependence and relationship with microstructure

[3H07-09] Severe Acident

(1)Experimental estimation on the change of microstructure and strength of the containment vessel steel during the severe accident

(2)Change of microstructure of austenitic alloys for the core internals by ion-irradiation and annealing

[3H10-12] ODS Steel

[3H13-13] SiC

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