Effect of deuterium on bonding quality of W/Ti/Steel HIP joints in first wall application

Ji Chao Wang; Jianjun Huang; Huibin Sun; Xiang Gao; Wanjing Wang; Qiang Li; Chunyi Xie; Xingli Wang; Zhen Chen; Qingran Gao; Songlin Liu; Guang Nan Luo; Jiangang Li

doi:10.1016/j.fusengdes.2018.12.010

Effect of deuterium on bonding quality of W/Ti/Steel HIP joints in first wall application

Ji Chao Wang
, Jianjun Huang
, Huibin Sun
, Xiang Gao
, Wanjing Wang
, Qiang Li
, Chunyi Xie
, Xingli Wang
, Zhen Chen
, Qingran Gao
, Songlin Liu
, Guang Nan Luo
, Jiangang Li

School of Electrical Engineering

Research output: Contribution to journal › Article › peer-review

16 Scopus citations

Abstract

The first wall (FW) of a water cooled ceramic breeder (WCCB) blanket uses ferritic/martensitic steel (FMS) as structural material and tungsten (W) as armor material. The FW is exposed to fusion reaction fuels: deuterium (D) or tritium (T) plasma; and HT, T₂, or HTO produced in breeding reactions. Titanium (Ti) is required as an interlayer in a W/FMS welding joint formed by hot isostatic pressing (HIP). However, Ti is sensitive to hydrogen (H) embrittlement which can result from the concentration and diffusion of H isotopes at welding interfaces. Qualitative analysis of the effect of D concentration on the W/Ti/FMS bonding quality was performed. The experiments demonstrated that D can affect the microstructure and mechanical properties of the W/Ti/FMS joints at lower D concentrations. Excessive TiD₂ will turn the Ti interlayer into powder, and finally lead to joint failure at higher D concentrations. The H isotope concentration in the joints shall be strictly controlled to ensure steady operation of the fusion reactor.

Original language	English
Pages (from-to)	313-320
Number of pages	8
Journal	Fusion Engineering and Design
Volume	138
DOIs	https://doi.org/10.1016/j.fusengdes.2018.12.010
State	Published - Jan 2019

Keywords

CFETR
Diffusion bonding
H isotope
W steel
WCCB

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10.1016/j.fusengdes.2018.12.010

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@article{938dfe5137284c208d2fc09aae94895c,

title = "Effect of deuterium on bonding quality of W/Ti/Steel HIP joints in first wall application",

abstract = "The first wall (FW) of a water cooled ceramic breeder (WCCB) blanket uses ferritic/martensitic steel (FMS) as structural material and tungsten (W) as armor material. The FW is exposed to fusion reaction fuels: deuterium (D) or tritium (T) plasma; and HT, T2, or HTO produced in breeding reactions. Titanium (Ti) is required as an interlayer in a W/FMS welding joint formed by hot isostatic pressing (HIP). However, Ti is sensitive to hydrogen (H) embrittlement which can result from the concentration and diffusion of H isotopes at welding interfaces. Qualitative analysis of the effect of D concentration on the W/Ti/FMS bonding quality was performed. The experiments demonstrated that D can affect the microstructure and mechanical properties of the W/Ti/FMS joints at lower D concentrations. Excessive TiD2 will turn the Ti interlayer into powder, and finally lead to joint failure at higher D concentrations. The H isotope concentration in the joints shall be strictly controlled to ensure steady operation of the fusion reactor.",

keywords = "CFETR, Diffusion bonding, H isotope, W steel, WCCB",

author = "Wang, \{Ji Chao\} and Jianjun Huang and Huibin Sun and Xiang Gao and Wanjing Wang and Qiang Li and Chunyi Xie and Xingli Wang and Zhen Chen and Qingran Gao and Songlin Liu and Luo, \{Guang Nan\} and Jiangang Li",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

year = "2019",

month = jan,

doi = "10.1016/j.fusengdes.2018.12.010",

language = "英语",

volume = "138",

pages = "313--320",

journal = "Fusion Engineering and Design",

issn = "0920-3796",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Effect of deuterium on bonding quality of W/Ti/Steel HIP joints in first wall application

AU - Wang, Ji Chao

AU - Huang, Jianjun

AU - Sun, Huibin

AU - Gao, Xiang

AU - Wang, Wanjing

AU - Li, Qiang

AU - Xie, Chunyi

AU - Wang, Xingli

AU - Chen, Zhen

AU - Gao, Qingran

AU - Liu, Songlin

AU - Luo, Guang Nan

AU - Li, Jiangang

PY - 2019/1

Y1 - 2019/1

N2 - The first wall (FW) of a water cooled ceramic breeder (WCCB) blanket uses ferritic/martensitic steel (FMS) as structural material and tungsten (W) as armor material. The FW is exposed to fusion reaction fuels: deuterium (D) or tritium (T) plasma; and HT, T2, or HTO produced in breeding reactions. Titanium (Ti) is required as an interlayer in a W/FMS welding joint formed by hot isostatic pressing (HIP). However, Ti is sensitive to hydrogen (H) embrittlement which can result from the concentration and diffusion of H isotopes at welding interfaces. Qualitative analysis of the effect of D concentration on the W/Ti/FMS bonding quality was performed. The experiments demonstrated that D can affect the microstructure and mechanical properties of the W/Ti/FMS joints at lower D concentrations. Excessive TiD2 will turn the Ti interlayer into powder, and finally lead to joint failure at higher D concentrations. The H isotope concentration in the joints shall be strictly controlled to ensure steady operation of the fusion reactor.

AB - The first wall (FW) of a water cooled ceramic breeder (WCCB) blanket uses ferritic/martensitic steel (FMS) as structural material and tungsten (W) as armor material. The FW is exposed to fusion reaction fuels: deuterium (D) or tritium (T) plasma; and HT, T2, or HTO produced in breeding reactions. Titanium (Ti) is required as an interlayer in a W/FMS welding joint formed by hot isostatic pressing (HIP). However, Ti is sensitive to hydrogen (H) embrittlement which can result from the concentration and diffusion of H isotopes at welding interfaces. Qualitative analysis of the effect of D concentration on the W/Ti/FMS bonding quality was performed. The experiments demonstrated that D can affect the microstructure and mechanical properties of the W/Ti/FMS joints at lower D concentrations. Excessive TiD2 will turn the Ti interlayer into powder, and finally lead to joint failure at higher D concentrations. The H isotope concentration in the joints shall be strictly controlled to ensure steady operation of the fusion reactor.

KW - CFETR

KW - Diffusion bonding

KW - H isotope

KW - W steel

KW - WCCB

UR - https://www.scopus.com/pages/publications/85058154641

U2 - 10.1016/j.fusengdes.2018.12.010

DO - 10.1016/j.fusengdes.2018.12.010

M3 - 文章

AN - SCOPUS:85058154641

SN - 0920-3796

VL - 138

SP - 313

EP - 320

JO - Fusion Engineering and Design

JF - Fusion Engineering and Design

ER -

Effect of deuterium on bonding quality of W/Ti/Steel HIP joints in first wall application

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Keywords

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