Interfacial characterization of dissimilar-metals bonding between vanadium alloy and Hastelloy X alloy by explosive welding

Shaoning Jiang; Jingjie Shen; Takuya Nagasaka; Takeo Muroga; Akio Sagara; Somei Ohnuki; Kazuyuki Hokamoto; Shigeru Tanaka; Daisuke Inao; Yasuhiro Morizono; Ryuta Kasada; Pengfei Zheng

doi:10.1016/j.jnucmat.2020.152322

Interfacial characterization of dissimilar-metals bonding between vanadium alloy and Hastelloy X alloy by explosive welding

Shaoning Jiang, Jingjie Shen, Takuya Nagasaka, Takeo Muroga, Akio Sagara, Somei Ohnuki, Kazuyuki Hokamoto, Shigeru Tanaka, Daisuke Inao, Yasuhiro Morizono, Ryuta Kasada, Pengfei Zheng

IMR - Materials Design Division

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

18 Citations (Scopus)

Abstract

Dissimilar-metals bonding between V–4Cr–4Ti and Hastelloy X alloy was investigated by explosive welding, which is essential to connect coolant pipes of Flibe blanket and external components such as tritium extractor and heat exchanger in fusion reactor. The nano-indentation hardness and corresponding microstructure at the interface are evaluated. After the explosive welding, a characterization of the typical wavy interface indicates good weldability. Discontinuous vortex regions appear at the interface and reveal obvious hardening up to 806 HV. Microstructural analysis indicates that the interlayer consists of Ni_37.1V₂₁Cr_20.5Fe_15.4Mo_4.4Ti_1.0 Co_0.6 with a fcc lattice structure and a high density of dislocations, and no intermetallic forms. Based on the compositions, the formation of solid solution was predicted by the entropy and enthalpy of the multi-component alloy system, despite the phase diagrams of binary alloys of the constituent elements indicating the formation of intermetallics. Study of hardening mechanism at the interlayer indicates that obvious hardening is mainly attributed to solid-solution hardening and dislocation hardening.

Original language	English
Article number	152322
Journal	Journal of Nuclear Materials
Volume	539
DOIs	https://doi.org/10.1016/j.jnucmat.2020.152322
Publication status	Published - 2020 Oct

Keywords

Explosive welding
Hardening
Solid solution
Vanadium alloy

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10.1016/j.jnucmat.2020.152322

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Jiang, S., Shen, J., Nagasaka, T., Muroga, T., Sagara, A., Ohnuki, S., Hokamoto, K., Tanaka, S., Inao, D., Morizono, Y., Kasada, R., & Zheng, P. (2020). Interfacial characterization of dissimilar-metals bonding between vanadium alloy and Hastelloy X alloy by explosive welding. Journal of Nuclear Materials, 539, Article 152322. https://doi.org/10.1016/j.jnucmat.2020.152322

@article{c6bc067d71324e0db29fd003f24feea1,

title = "Interfacial characterization of dissimilar-metals bonding between vanadium alloy and Hastelloy X alloy by explosive welding",

abstract = "Dissimilar-metals bonding between V–4Cr–4Ti and Hastelloy X alloy was investigated by explosive welding, which is essential to connect coolant pipes of Flibe blanket and external components such as tritium extractor and heat exchanger in fusion reactor. The nano-indentation hardness and corresponding microstructure at the interface are evaluated. After the explosive welding, a characterization of the typical wavy interface indicates good weldability. Discontinuous vortex regions appear at the interface and reveal obvious hardening up to 806 HV. Microstructural analysis indicates that the interlayer consists of Ni37.1V21Cr20.5Fe15.4Mo4.4Ti1.0 Co0.6 with a fcc lattice structure and a high density of dislocations, and no intermetallic forms. Based on the compositions, the formation of solid solution was predicted by the entropy and enthalpy of the multi-component alloy system, despite the phase diagrams of binary alloys of the constituent elements indicating the formation of intermetallics. Study of hardening mechanism at the interlayer indicates that obvious hardening is mainly attributed to solid-solution hardening and dislocation hardening.",

keywords = "Explosive welding, Hardening, Solid solution, Vanadium alloy",

author = "Shaoning Jiang and Jingjie Shen and Takuya Nagasaka and Takeo Muroga and Akio Sagara and Somei Ohnuki and Kazuyuki Hokamoto and Shigeru Tanaka and Daisuke Inao and Yasuhiro Morizono and Ryuta Kasada and Pengfei Zheng",

note = "Funding Information: Funding: This work was supported by the Overseas Training Program for Teachers of Qilu University of Technology ( Shandong Academy of Sciences ) (Grant No. 450404 ), National Natural Science Foundation of China (Grant No. 51501097 ), Joint Usage/Research by the Institute of Pulsed Power Science, Kumamoto University and NIFS Fusion Engineering Research Project Budget (Grant No. UFFF024 ). Publisher Copyright: {\textcopyright} 2020 Elsevier B.V.",

year = "2020",

month = oct,

doi = "10.1016/j.jnucmat.2020.152322",

language = "English",

volume = "539",

journal = "Journal of Nuclear Materials",

issn = "0022-3115",

publisher = "Elsevier",

}

TY - JOUR

T1 - Interfacial characterization of dissimilar-metals bonding between vanadium alloy and Hastelloy X alloy by explosive welding

AU - Jiang, Shaoning

AU - Shen, Jingjie

AU - Nagasaka, Takuya

AU - Muroga, Takeo

AU - Sagara, Akio

AU - Ohnuki, Somei

AU - Hokamoto, Kazuyuki

AU - Tanaka, Shigeru

AU - Inao, Daisuke

AU - Morizono, Yasuhiro

AU - Kasada, Ryuta

AU - Zheng, Pengfei

N1 - Funding Information: Funding: This work was supported by the Overseas Training Program for Teachers of Qilu University of Technology ( Shandong Academy of Sciences ) (Grant No. 450404 ), National Natural Science Foundation of China (Grant No. 51501097 ), Joint Usage/Research by the Institute of Pulsed Power Science, Kumamoto University and NIFS Fusion Engineering Research Project Budget (Grant No. UFFF024 ). Publisher Copyright: © 2020 Elsevier B.V.

PY - 2020/10

Y1 - 2020/10

N2 - Dissimilar-metals bonding between V–4Cr–4Ti and Hastelloy X alloy was investigated by explosive welding, which is essential to connect coolant pipes of Flibe blanket and external components such as tritium extractor and heat exchanger in fusion reactor. The nano-indentation hardness and corresponding microstructure at the interface are evaluated. After the explosive welding, a characterization of the typical wavy interface indicates good weldability. Discontinuous vortex regions appear at the interface and reveal obvious hardening up to 806 HV. Microstructural analysis indicates that the interlayer consists of Ni37.1V21Cr20.5Fe15.4Mo4.4Ti1.0 Co0.6 with a fcc lattice structure and a high density of dislocations, and no intermetallic forms. Based on the compositions, the formation of solid solution was predicted by the entropy and enthalpy of the multi-component alloy system, despite the phase diagrams of binary alloys of the constituent elements indicating the formation of intermetallics. Study of hardening mechanism at the interlayer indicates that obvious hardening is mainly attributed to solid-solution hardening and dislocation hardening.

AB - Dissimilar-metals bonding between V–4Cr–4Ti and Hastelloy X alloy was investigated by explosive welding, which is essential to connect coolant pipes of Flibe blanket and external components such as tritium extractor and heat exchanger in fusion reactor. The nano-indentation hardness and corresponding microstructure at the interface are evaluated. After the explosive welding, a characterization of the typical wavy interface indicates good weldability. Discontinuous vortex regions appear at the interface and reveal obvious hardening up to 806 HV. Microstructural analysis indicates that the interlayer consists of Ni37.1V21Cr20.5Fe15.4Mo4.4Ti1.0 Co0.6 with a fcc lattice structure and a high density of dislocations, and no intermetallic forms. Based on the compositions, the formation of solid solution was predicted by the entropy and enthalpy of the multi-component alloy system, despite the phase diagrams of binary alloys of the constituent elements indicating the formation of intermetallics. Study of hardening mechanism at the interlayer indicates that obvious hardening is mainly attributed to solid-solution hardening and dislocation hardening.

KW - Explosive welding

KW - Hardening

KW - Solid solution

KW - Vanadium alloy

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VL - 539

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

M1 - 152322

ER -

Interfacial characterization of dissimilar-metals bonding between vanadium alloy and Hastelloy X alloy by explosive welding

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