IRRADIATION RESPONSE OF A REDUCED ACTIVATION FE-8CR-2W MARTENSITIC STEEL (F82H) AFTER FFTF IRRADIATION

被引：37

作者：

KOHNO, Y

GELLES, DS

KOHYAMA, A

TAMURA, M

HISHINUMA, A

机构：

[1] BATELLE PACIFIC NW LAB,DEPT MAT SCI,RICHLAND,WA 99352

[2] NIPPON KOKAN KK,STEEL RES CTR,KAWASAKI KU,KAWASAKI 210,JAPAN

[3] JAPAN ATOM RES INST,DEPT FUELS & MAT RES,TOKAI,IBARAKI 31911,JAPAN

来源：

JOURNAL OF NUCLEAR MATERIALS | 1992年 / 191卷

关键词：

D O I：

10.1016/0022-3115(92)90597-E

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The tungsten-stabilized martensitic steel F82H (Fe-8Cr-2W-0.1C-V,Ta,B) was examined after FFTF irradiation to fluences as high as 37 dpa over the temperature range of 365 to 750-degrees-C. TEM microstructural observations showed that the tempered martensitic structure was quite stable below 405-degrees-C. At 550-degrees-C, slight recovery of martensite lath structure was recognizable, concurrent with the coarsening of carbide particles. Above 670-degrees-C, the martensite lath structure was eliminated. Cavity formation was observed only at or below 405-degrees-C irradiation. The maximum swelling was measured to be as high as 0.14% at 405-degrees-C. Analysis of precipitate extraction replicas showed superior phase stability for F82H during irradiation. Precipitates identified in the irradiated specimens were M23C6 and Laves, the same phases that were identified following thermal aging. Radiation-induced precipitates other than M23C6 or Laves were not observed. Based on these microstructural observations, superior mechanical properties may be expected for F82H after irradiation.

引用

页码：868 / 873

页数：6

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