INFLUENCE OF HIGH-DOSE NEUTRON-IRRADIATION AT 385-DEGREES-C AND 750-DEGREES-C ON THE MICROHARDNESS OF MGAL2O4 SPINEL

被引:18
作者
BLACK, CA [1 ]
GARNER, FA [1 ]
BRADT, RC [1 ]
机构
[1] PACIFIC NW LAB, RICHLAND, WA 99352 USA
关键词
D O I
10.1016/0022-3115(94)91002-2
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
High-purity specimens of stoichiometric MgAl2O4 single crystal spinel and a hot-pressed polycrystalline ceramic spinel were irradiated to exposures as large as 24.9 x 10(22) n Cm-2 (E > 0.1 MeV) in FFTF at 385 and 750 degrees C. The specimens did not develop any brittleness or fragility, and maintained their physical integrity. Microhardness measurements revealed that initially all specimens hardened a small amount and then recovered slightly. At the lower irradiation temperature, the dependence of microhardness on orientation observed prior to irradiation tended to disappear. There was also some evidence that a secondary slip system was being activated. Following 750 degrees C irradiation, the orientation dependence was not lost, and the evidence for activation of a secondary slip system was stronger.
引用
收藏
页码:1096 / 1100
页数:5
相关论文
共 11 条
[1]  
AKIMUNE Y, 1987, J AM CERAM SOC, pC84
[2]  
CLINARD FW, 1983, RES MECH, V8, P207
[3]   THE EFFECT OF ELEVATED-TEMPERATURE NEUTRON-IRRADIATION ON FRACTURE-TOUGHNESS OF CERAMICS [J].
CLINARD, FW ;
HURLEY, GF ;
YOUNGMAN, RA ;
HOBBS, LW .
JOURNAL OF NUCLEAR MATERIALS, 1985, 133 (AUG) :701-704
[4]   NEUTRON-IRRADIATION DAMAGE IN MGO, AL2O3 AND MGAL2O4 CERAMICS [J].
CLINARD, FW ;
HURLEY, GF ;
HOBBS, LW .
JOURNAL OF NUCLEAR MATERIALS, 1982, 108 (1-2) :655-670
[5]  
FUKUSHIMA Y, 1990, J NUCL MATER, V175, P203, DOI 10.1016/0022-3115(90)90208-5
[6]  
GARNER FA, 1994, J NUCL MATER, V212
[7]  
HURLEY GF, 1980, AM CERAM SOC BULL, V59, P456
[8]  
HURLEY GF, 1981, J NUCL MATER, V103, P761
[9]  
KINOSHITA C, 1994, IN PRESS J NUCL MATE
[10]   DAMAGE STRUCTURES IN FAST-NEUTRON IRRADIATED MAGNESIUM ALUMINATE AND ELECTRON-IRRADIATED ALUMINUM OXYNITRIDE SPINELS [J].
PARKER, CA ;
HOBBS, LW ;
RUSSELL, KC ;
CLINARD, FW .
JOURNAL OF NUCLEAR MATERIALS, 1985, 133 (AUG) :741-744