Effect of hydrogen pre-charging on the tensile properties of the boron-containing multi-principal element alloys

Qiancheng Zhao; Hong Luo; Lifeng Hou; Zejun Li; Xiaochen Liu; Yue Chang; Eugen Rabkin

doi:10.1016/j.corsci.2025.113137

Effect of hydrogen pre-charging on the tensile properties of the boron-containing multi-principal element alloys

Qiancheng Zhao, Hong Luo, Lifeng Hou, Zejun Li, Xiaochen Liu, Yue Chang, Eugen Rabkin

Materials Science & Engineering

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

Abstract

The tensile performance of a boron-containing Ni_43.9Co_22.4Fe_8.8Al_10.7Ti_11.7B_2.5 multi-principal element alloy was studied through tensile tests after electrochemical hydrogen pre-charging. Hydrogen pre-charging notably reduced both the elongation and strength of the alloys. Brittle cracking regions and an increased number of cracks appeared at the hydrogen pre-charged alloys after tensile deformation. Tensile cracks in the hydrogen pre-charged samples propagated in the mixed intergranular and transgranular cracking modes. Grain boundaries containing the hexagonal close-packed phases were susceptible to crack propagation. The cracking behavior of the hydrogen pre-charged alloys was attributed to the combined hydrogen-enhanced localized plasticity and hydrogen-enhanced decohesion mechanisms.

Original language	English
Article number	113137
Journal	Corrosion Science
Volume	255
DOIs	https://doi.org/10.1016/j.corsci.2025.113137
State	Published - Oct 2025

Keywords

Cracking
Deformation microstructure
Hydrogen embrittlement
Multi-principal element alloys

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
General Materials Science

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10.1016/j.corsci.2025.113137

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title = "Effect of hydrogen pre-charging on the tensile properties of the boron-containing multi-principal element alloys",

abstract = "The tensile performance of a boron-containing Ni43.9Co22.4Fe8.8Al10.7Ti11.7B2.5 multi-principal element alloy was studied through tensile tests after electrochemical hydrogen pre-charging. Hydrogen pre-charging notably reduced both the elongation and strength of the alloys. Brittle cracking regions and an increased number of cracks appeared at the hydrogen pre-charged alloys after tensile deformation. Tensile cracks in the hydrogen pre-charged samples propagated in the mixed intergranular and transgranular cracking modes. Grain boundaries containing the hexagonal close-packed phases were susceptible to crack propagation. The cracking behavior of the hydrogen pre-charged alloys was attributed to the combined hydrogen-enhanced localized plasticity and hydrogen-enhanced decohesion mechanisms.",

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T1 - Effect of hydrogen pre-charging on the tensile properties of the boron-containing multi-principal element alloys

AU - Zhao, Qiancheng

AU - Luo, Hong

AU - Hou, Lifeng

AU - Li, Zejun

AU - Liu, Xiaochen

AU - Chang, Yue

AU - Rabkin, Eugen

PY - 2025/10

Y1 - 2025/10

N2 - The tensile performance of a boron-containing Ni43.9Co22.4Fe8.8Al10.7Ti11.7B2.5 multi-principal element alloy was studied through tensile tests after electrochemical hydrogen pre-charging. Hydrogen pre-charging notably reduced both the elongation and strength of the alloys. Brittle cracking regions and an increased number of cracks appeared at the hydrogen pre-charged alloys after tensile deformation. Tensile cracks in the hydrogen pre-charged samples propagated in the mixed intergranular and transgranular cracking modes. Grain boundaries containing the hexagonal close-packed phases were susceptible to crack propagation. The cracking behavior of the hydrogen pre-charged alloys was attributed to the combined hydrogen-enhanced localized plasticity and hydrogen-enhanced decohesion mechanisms.

AB - The tensile performance of a boron-containing Ni43.9Co22.4Fe8.8Al10.7Ti11.7B2.5 multi-principal element alloy was studied through tensile tests after electrochemical hydrogen pre-charging. Hydrogen pre-charging notably reduced both the elongation and strength of the alloys. Brittle cracking regions and an increased number of cracks appeared at the hydrogen pre-charged alloys after tensile deformation. Tensile cracks in the hydrogen pre-charged samples propagated in the mixed intergranular and transgranular cracking modes. Grain boundaries containing the hexagonal close-packed phases were susceptible to crack propagation. The cracking behavior of the hydrogen pre-charged alloys was attributed to the combined hydrogen-enhanced localized plasticity and hydrogen-enhanced decohesion mechanisms.

KW - Cracking

KW - Deformation microstructure

KW - Hydrogen embrittlement

KW - Multi-principal element alloys

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Effect of hydrogen pre-charging on the tensile properties of the boron-containing multi-principal element alloys

Abstract

Keywords

ASJC Scopus subject areas

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