Effect of Ti interlayer on the bonding quality of W and steel HIP joint

被引：47

作者：

Wang, Ji-Chao ^{[1
,2
]}

Wang, Wanjing ^{[1
]}

Wei, Ran ^{[1
,2
]}

Wang, Xingli ^{[1
,2
]}

Sun, Zhaoxuan ^{[1
,2
]}

Xie, Chunyi ^{[1
]}

Li, Qiang ^{[1
]}

Luo, Guang-Nan ^{[1
,2
,3
,4
]}

机构：

[1] Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China

[2] Univ Sci & Technol China, Grad Sch, Sci Isl Branch, Hefei 230031, Peoples R China

[3] Hefei Ctr Phys Sci & Technol, Hefei 230022, Peoples R China

[4] Chinese Acad Sci, Hefei Sci Ctr, Hefei 230027, Peoples R China

来源：

JOURNAL OF NUCLEAR MATERIALS | 2017年 / 485卷

基金：

中国国家自然科学基金;

关键词：

W; Steel; Ti; Hot isostatic pressing; Diffusion bonding; TITANIUM; MOCK; 304-STAINLESS-STEEL; MICROSTRUCTURE; FABRICATION; STRENGTH; DESIGN; CFETR; TBM;

D O I：

10.1016/j.jnucmat.2016.12.024

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Tungsten (W) and steel bonding is one of the key technologies for blanket First Wall (FW) manufacture in thermal fusion reactor. The W/Steel joints are prone to fail without interlayer for the different thermo physical properties. To study the effect of titanium (Ti) interlayer on the bonding quality of Wand steel joints, W/Steel Hot Isostatic Pressing (HIP) experiments with Ti interlayer were conducted under 930 degrees C, 100 MPa for 2 h. Intermetallics caused by atom interdiffusion would affect the bonding quality of W/Ti/Steel HIP joints, the bonding quality was evaluated by microstructure analysis and mechanical tests. All the HIP joints were well bonded and results showed no intermetallics occurred between W/Ti interfaces, meanwhile multiply phases were found between Ti/Steel interfaces. Shear tests indicated when Ti thickness was 100-500 mu m, the maximum shear strength of W/Ti/Steel HIP joints would be up to around 151 MPa. Charpy impact tests showed the W/Ti/Steel HIP joints all broke in a brittle manner and the maximum Charpy impact energy was similar to 0.192 J. Nano-indentation tests demonstrated W/Ti interfaces could be enhanced by solid solution hardening and formation of brittle phases has conducted high hardness across the Ti/Steel interfaces. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：8 / 14

页数：7

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