The impact of transmutant helium on weldability of austenitic steel

被引：7

作者：

Fabritsiev, SA ^{[1
]}

Pokrovsky, AS ^{[1
]}

Brovko, VA ^{[1
]}

机构：

[1] ATOM REACTORS RES INST, DIMITROVGRAD 433510, RUSSIA

来源：

JOURNAL OF NUCLEAR MATERIALS | 1996年 / 233卷

关键词：

D O I：

10.1016/S0022-3115(96)00035-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The results of the investigation of 0.05-0.15 dpa neutron irradiation impact on the Cr16Ni11Mo3Ti austenitic steel weldability are presented. Samples were irradiated to doses of 10(20) n/cm(2) and 3 x 10(20) n/cm(2) (E > 0.1 MeV) in the RBT-10 reactor, thus providing helium accumulation of 1 appm and 2.5 appm, respectively. Flat samples, 1 mm in thickness, were welded by an automatic device for argon are welding in a hot chamber. Low-cycle fatigue (LCF) testing in bending was used to assess impact of helium on the degradation of welded joint properties. LCF tests showed that the transmutant helium accumulation resulted in a decrease in the number of cycles to failure at T-test = 20 degrees C and 350 degrees C. It is concluded that repeated welding will present a problem in the repair of ITER materials.

引用

页码：173 / 176

页数：4

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