| Project/Area Number |
01044014
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| Research Category |
Grant-in-Aid for international Scientific Research
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| Allocation Type | Single-year Grants |
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| Section | Joint Research |
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| Research Institution | TOHOKU UNIVERSITY |
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Principal Investigator |
SHOJI Tetsuo TOHOKU UNIV. FACULTY OF ENGNG, RES. INST. FRACTURE TECHNOLOGY, PROFESSOR, 工学部, 教授 (80091700)
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| Co-Investigator(Kenkyū-buntansha) |
G.E Kohse マサチューセッツ工科大学, 原子炉実験所, 助手
O.K Harling マサチューセッツ工科大学, 原子炉実験所, 教授
M.J Driscoll マサチューセッツ工科大学, 原子力工学科, 教授
R.G Ballinge マサチューセッツ工科大学, 材料科学科, 助教授
TAKAHASHI Hideaki TOHOKU UNIV. FACULTY OF ENGNG, RES. INST. FRACTURE TECHNOLOGY, PROFESSOR, 工学部, 教授 (10005267)
DRISCOLL M.J. M.I.T. DEPT. NUCLEAR ENGNG. PROFESSOR
HARLING O.K. M.I.T. NUCLEAR REACTOR LAB., PROFESSOR
BALLINGER R.G. M.I.T. DEPT. MATERIALS SCIENCE AND ENGNG., ASSOCIATE PROFESSOR
KOHSE G.e. M.I.T. NUCLEAR REACTOR LAB., RESEARCH ASSOCIATE
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| Project Period (FY) |
1989
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| Project Status |
Completed (Fiscal Year 1989)
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| Budget Amount *help |
¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 1989: ¥3,500,000 (Direct Cost: ¥3,500,000)
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| Keywords | IRRADIATION ASSISTED STRESS CORROSION CRACKING / SENSITIZATION / GRAIN BOUNDARY SEGREGATION / Cr DEPLATION SLOW STRAIN RATE TESTS / SULFUR / PHOSPHOROUS / INTERGRANULAR CRACKING EPR / CORIOU TEST / EPR / Coriou試験 |
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| Research Abstract |
OBJECTIVES OF THIS RESEARCH ARE TO SIMULATE THE GRAIN BOUNDARY STRUCTURE AND CHEMISTRY OF IRRADIATION ASSISTED GRAIN BOUNDARY SEGREGATION BY THERMAL TREATMENTS ANF TO CHARACTERIZE THE GRAIN BOUNDARIES IN CORRELATION WITH IGSCC SUSCEPTIBILITY BY MEANS OF SSRT IN SIMULATED LWR WATER ENVIRONMENTS.
IN THIS YEAR, MAIN EFFORTS HAVE BEEN PAID FOR DETERMINATION OF MATERIALS SELECTION FOR THE PURPOSE MENTIONED ABOVE AND FINALIZED 7 AUSTENITIC STAINLESS STEELS WITH A VARIATION OF IMPURITY CONTENTS.
CHARACTERIZATION OF GRAIN BOUNDARY WERE PERFORMED BY EPR AND CORIOU TESTS. IGSCC WAS REPRODUCED ON THE MATERIALS WITH GRAIN BOUNDARY SEGREGATION OF SULFUR AND PHOSPHOROUS AND WITH NON SENSITIZED CONDITIONS. HIGH CRACKING SUSCEPTIBILITY WAS OBTAINED ON THE SPECIMENS WITH SEGRAGATION.
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