Operation, Maintenance and Inspection of HENDEL from March 1986 to February 1987

; ; ; ; Nekoya, Shinichi; ; ; ; ;

JAERI-M 87-058, 48 Pages, 1987/04

JAERI-M-87-058.pdf:4.28MB

no abstracts in English

Effects of Cyclic Aging Mechanical Properties and Microstructures of Hastelloy Alloy X

; ; Kondo, Tatsuo

JAERI-M 82-052, 31 Pages, 1982/06

JAERI-M-82-052.pdf:3.6MB

no abstracts in English

Effect of Mechanical Surface Treatment on Oxidation and Carburization of some Austenitic Heat Resisting Alloys in the Simulated HTGR Helium Environment

Tamura, Manabu*; Kondo, Tatsuo

JAERI-M 9948, 27 Pages, 1982/02

JAERI-M-9948.pdf:1.49MB

Influence of mechanical surface finishing on corrosion was studied with some austenitic heat resisting alloys exposed to the simulated HTGR helium environment. The exposure tests were made at 900 and 1000C for 500 and 1500h. Contrary to the prediction based on the trend of some conventional experimental results on the oxidation of cold worked material at comparatively low temperatures, severe cold working, e.g. shot-blasting, was found to accelerate oxidation and carburization. Although, in some cases, moderate surface grinding showed results almost comparable to the surface abraded with fine emery papers, most mechanical surface finishing were recognized as to promote oxidation and carburization at 900 and 1000 C in the simulated HTGR helium. The oxide film formed on the ground or shot-blasted specimen tended to spall more easily during cooling after isothermal exposure at 1000C. Based on the metallographic observation mechanisms of the acceleration of oxidation and carburization was discussed. The surface cold work was considered to cause not only enhanced chromium diffusion to the surface but also considerable degree of inhomogeneity of the degree of working in the microscopic scale, resulting in rather rapid oxide build-up and spallation. Some of the surface finishing in practice with severe cold working, thus, were concluded to be harmful to the integrity of HTGR structural components.

Ductility Loss of Neutron Irradiated Hastelloy-X at Elevated Temperatures

; Ogawa, Yutaka; ; Kondo, Tatsuo

JAERI-M 8807, 16 Pages, 1980/04

JAERI-M-8807.pdf:0.72MB

no abstracts in English

Fatigue Crack Growth Characteristic of Hastelloy X in Air at Elevated Temperatures

; Kondo, Tatsuo

JAERI-M 8787, 23 Pages, 1980/03

JAERI-M-8787.pdf:1.05MB

no abstracts in English

Oxidation Kinetics and Spallation of Oxide Film of the Structural Metal in HTR Helium under Thermal Cycles

Shindo, Masami; ; Kondo, Tatsuo

JAERI-M 8210, 12 Pages, 1979/04

JAERI-M-8210.pdf:0.51MB

no abstracts in English

The constrction and the performance tests of OGL-1

; ; ; ; ; *; *; *; *; *

Nihon Genshiryoku Gakkai-Shi, 21(3), p.245 - 267, 1979/00

https://doi.org/10.3327/jaesj.21.245

no abstracts in English

Effect of Mn on oxidation resistance of hastelloy-x in the simulated VHTR helium environment.

Shindo, Masami; ; Kondo, Tatsuo

Tainetsu Kinzoku Zairyo Dai-123-Iinkai Kenkyu Hokoku, 19(3), p.331 - 338, 1978/00

no abstracts in English

Creep Characteristics of hastelloy-X in test environments with different oxidation potentials.

; Kondo, Tatsuo

Tainetsu Kinzoku Zairyo Dai-123-Iinkai Kenkyu Hokoku, 19(3), p.321 - 330, 1978/00

no abstracts in English

Corrosion of nickel-base high temperature alloys in simulated HTGR coolant helium at very high temperatures.

Shindo, Masami; Kondo, Tatsuo

Tetsu To Hagane, 62(12), p.1540 - 1549, 1976/12

http://joi.jlc.jst.go.jp/JST.Journalarchive/tetsutohagane1955/62.1540

no abstracts in English