Fracture toughness test results of precracked Charpy specimens of irradiated 73W weld material

被引：4

作者：

Chaouadi, R ^{[1
]}

van Walle, E ^{[1
]}

Fabry, A ^{[1
]}

Scibetta, M ^{[1
]}

Van de Velde, J ^{[1
]}

机构：

[1] CEN SCK, Reactor Mat Res, B-2400 Mol, Belgium

来源：

EFFECTS OF RADIATION ON MATERIALS: 19TH INTERNATIONAL SYMPOSIUM | 2000年 / 1366卷

关键词：

fracture toughness; Charpy; transition; reconstitution; reactor pressure vessel steel; reference temperature; master curve;

D O I：

10.1520/STP12396S

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This work investigates the use of precracked Charpy specimens to predict fracture toughness behaviour of reactor pressure vessel steels. Fracture toughness measurements were performed on the 73W weld material previously tested by Oak Ridge National Laboratories (ORNL). Charpy-size specimens were tested in three-point bend and compared with the original data obtained on large compact tension (CT) samples. Fracture toughness tests were performed in both unirradiated and irradiated (T(irrad)approximate to 288 degrees C and Phi approximate to 1.5 10(19) n/cm(2), E>1MeV) conditions. Most of the Charpy size samples were reconstituted from broken CT specimens. Fracture toughness data obtained using Charpy size samples are in good agreement with results from large CT samples. Moreover, the various temperature shifts measured by the Charpy impact test data are in agreement with the fracture toughness shifts. Reconstitution results in a decrease of the upper shelf energy but has little effect on the other transition parameters.

引用

页码：279 / 294

页数：4

共 6 条

[1] Fracture toughness measurements in the transition regime using small size samples [J].

Chaouadi, R .

SMALL SPECIMEN TEST TECHNIQUES, 1998, 1329 :214-237

[2]

ISKANDER SK, 1992, AM SOC TEST MATER, V1125, P251, DOI 10.1520/STP17873S

[3]

Nanstad R.N., 1992, HSSI SERIES, V5

[4]

NANSTAD RK, 1992, AM SOC TEST MATER, V1125, P270, DOI 10.1520/STP17874S

[5]

SCIBETTA M, 1997, BLG749 SCK CEN

[6]

Van Walle E., 1996, ASTM STP, P415

← 1 →