Mechanical properties and microstructure characterization of Eurofer97 steel variants in EUROfusion program

被引：31

作者：

Chen, Xiang ^{[1
]}

Bhattacharya, Arunodaya ^{[1
]}

Sokolov, Mikhail A. ^{[1
]}

Glowers, Logan N. ^{[1
]}

Yamamoto, Yukinori ^{[1
]}

Graening, Tim ^{[2
]}

Linton, Kory D. ^{[1
]}

Katoh, Yutai ^{[1
]}

Rieth, Michael ^{[2
]}

机构：

[1] Oak Ridge Natl Lab, POB 2009, Oak Ridge, TN 37830 USA

[2] Karlsruhe Inst Technol, Karlsruhe, Baden Wurttembe, Germany

来源：

FUSION ENGINEERING AND DESIGN | 2019年 / 146卷

关键词：

Mechanical properties; Fracture toughness; Master curve; Small specimen testing technique; Eurofer97;

D O I：

10.1016/j.fusengdes.2019.03.158

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

Under the framework of EUROfusion, we performed comprehensive mechanical and microstructure characterization of ten Eurofer97 steel variants with varying compositions and heat treatment conditions. We characterized the pre-irradiation fracture toughness of the materials along with their Vickers hardness, tensile properties, and microstructure. Compared with standard Eurofer97, the ten variants didn't show a comprehensive improvement of mechanical properties. In addition, the composition and microstructures in some variants are adverse to fracture toughness, such as low C contents, coarse grain sizes, partially tempered martensite, lack of precipitates, and non-uniform distributions of coarse precipitates. Further studies will be performed on the same materials after neutron irradiation.

引用

页码：2227 / 2232

页数：6

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