Effect of irradiation on the microstructure and the mechanical properties of oxide dispersion strengthened low activation ferritic/martensitic steel

被引：25
|
作者：
Ramar, A. [1 ]
Baluc, N. [1 ]
Schaeublin, R. [1 ]
机构：
[1] Ecole Polytech Fed Lausanne, Ctr Rech Phys Plasmas, CH-5232 Villigen, Switzerland
来源：
JOURNAL OF NUCLEAR MATERIALS | 2007年 / 367卷
关键词：
D O I：
10.1016/j.jnucmat.2007.03.142
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Ferritic/martensitic (F/M) steels show good resistance to swelling and low damage accumulation upon irradiation relative to stainless steels. 0.3 wt% yttria particles were added to the F/M steel EUROFER 97 to produce oxide dispersion strengthened (ODS) steel, to increase the operating temperature as well as mechanical strength. ODS EUROFER 97 was irradiated in the PIREX facility with 590 MeV protons to 0.3, 1 and 2 dpa at 40 degrees C. Microstructure of the irradiated samples is analyzed in the transmission electron microscope using bright field, dark field and weak beam conditions. The presence of voids and dislocation loops is observed for the higher doses, where as at low dose (0.3 dpa) only small defects with sizes of 1-3 nm are observed as black dots. The relationship between the defect density to dispersoids is measured and the Burgers' vector of dislocation loops is analyzed. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：217 / 221
页数：5
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