A Ti-Fe-Sn thin film assembly for joining tungsten and reduced activation ferritic-martensitic steels

被引：23
|
作者：
Zhu, Wen [1 ]
Qiang, Jianbing [1 ]
Wang, Yingmin [1 ]
Sun, Jizhong [1 ]
Wang, Jianbao [2 ]
Lian, Youyun [2 ]
Feng, Fan [2 ]
Liu, Xiang [2 ]
机构：
[1] Dalian Univ Technol, Minist Educ, Key Lab Mat Modificat Laser Ion & Electron Beams, Dalian 116024, Liaoning, Peoples R China
[2] Southwestern Inst Phys, POB 432, Chengdu 610041, Sichuan, Peoples R China
来源：
MATERIALS & DESIGN | 2017年 / 125卷
关键词：
Divertor; Tungsten; RAFM steel; Brazing; Alloy design; HELIUM-COOLED DIVERTOR; W-W JOINTS; MECHANICAL-PROPERTIES; FUSION APPLICATIONS; METALLIC GLASSES; BRAZING FOILS; MICROSTRUCTURE; INTERLAYER; ALLOYS;
D O I：
10.1016/j.matdes.2017.03.060
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effective joining of tungsten and reduced activation ferritic-martensitic (RAFM) steels is crucial to fabrication of the divertor components of fusion reactors. In the presentwork, a lowneutron-activation filler metal system of Ti-Fe-Sn was designed to realize the so-called exothermic-reaction-assisted brazing. A series of three-layered Ti-Fe- Sn thin film assemblies were made by electroplating, which allowed the brazing of tungsten with a CLF-1 RAFM steel to be carried out at a temperature as low as 1090 degrees C. The joint structures made from the Sn-bearing filler metals demonstrated high strength and high resistance against thermocycling. The Sn-film layer in the filler assembly has delivered favorable alloying effects on depressing separation of Ti element in the W grain boundaries and the formation of pores, and on microstructure refinement in the brazed joints as well. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：55 / 61
页数：7
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