Microstructure and mechanical properties of neutron irradiated beryllium

被引：13

作者：

Ishitsuka, E ^{[1
]}

Kawamura, H

Terai, T

Tanaka, S

机构：

[1] Japan Atom Energy Res Inst, Oarai Res Estab, Oarai, Ibaraki 31113, Japan

[2] Univ Tokyo, Bunkyo Ku, Tokyo 113, Japan

来源：

JOURNAL OF NUCLEAR MATERIALS | 1998年 / 258卷

关键词：

D O I：

10.1016/S0022-3115(98)00106-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Microstructure and mechanical properties of the neutron irradiated beryllium were studied. Specimens were produced by various methods and had different grain sizes and impurity contents, and neutron irradiation was carried out with total fast neutron fluences of 1.3-4.3 x 10(21) n/cm(2) (E > 1 MeV) at 327-616 degrees C. Swelling was increased by high irradiation temperature, high fluence, and by small grain size and high impurity content. Obvious decreasing of the fracture stress was observed in small grain specimens which had many helium bubbles on the grain boundary. Decreasing of the fracture stress for small grain specimens was presumably caused by crack propagation on the grain boundaries which were weakened by helium bubbles. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：566 / 570

页数：5

共 13 条

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