文章信息/Info

Title:

Research Progress on Strong and Tough Hydrogen-Embrittlement Resistant High-Entropy Alloys

文章編號:

1674-3962(2025)01-0101-10

作者:

付正鴻; 李熙; 李志明

1. 西南交通大學(xué)力學(xué)與航空航天學(xué)院，四川 成都 611756 2. 中南大學(xué)材料科學(xué)與工程學(xué)院，湖南 長沙 410083

Author(s):

FU Zhenghong;  LI Xi;  LI Zhiming

1. School of Mechanics and Aerospace Engineering, Southwest Jiaotong University, Chengdu 611756, China 2.School of Materials Science and Engineering, Central South University, Changsha 410083, China

關(guān)鍵詞:

氫脆; 高熵合金; 高強(qiáng)度; 組織調(diào)控; 氫擴(kuò)散; 變形機(jī)制

Keywords:

hydrogen-embrittlement;  high-entropy alloy;  high strength;  microstructure regulation;  hydrogen diffusion;  deformation mechanism

分類號:

TG172；TG139

DOI:

10.7502/j.issn.1674-3962.202410009

文獻(xiàn)標(biāo)志碼:

A

摘要:

材料的氫脆敏感性通常隨其機(jī)械強(qiáng)度的提高而升高，使得高強(qiáng)韌抗氫脆材料的開發(fā)面臨挑戰(zhàn)。高熵合金晶內(nèi)顯著的局部化學(xué)環(huán)境波動和晶格畸變有助于使其具有良好的氫相容性，在實(shí)現(xiàn)高強(qiáng)韌和抗氫脆等特征方面展現(xiàn)出發(fā)展?jié)摿�。對近年來高�?qiáng)韌抗氫脆高熵合金的研究現(xiàn)狀進(jìn)行了綜述：首先總結(jié)了通過添加C，N和B等非金屬間隙元素進(jìn)行微合金化調(diào)控、析出相調(diào)控、主元比例調(diào)控和制備工藝優(yōu)化等方式制備的高強(qiáng)韌高熵合金的抗氫脆性能；然后基于合金中氫的吸附及擴(kuò)散行為、氫誘導(dǎo)的變形組織演化等研究，總結(jié)了合金的抗氫脆機(jī)理；最后展望了高強(qiáng)韌、抗氫脆高熵合金的未來發(fā)展趨勢。

Abstract:

The increasing susceptibility to hydroge-embrittlement (HE) with the increase of material strength poses a key challenge in developing materials resistant to this phenomenon. High-entropy alloys (HEAs), characterized by significant localized chemical environment fluctuations and lattice distortions, demonstrate promising hydrogen compatibility. These attributes qualify them as potential candidates for manufacturing high-strength materials capable of withstanding HE. This article reviews the advancements in high-strength and HE-resistant HEAs. It begins by summarizing resistance improving to HE through strategies such as microalloying with non-metallic interstitial elements (e.g., C, N, and B), controlling precipitate phases, adjusting component ratios, and optimizing fabrication processes. The review then covers research on hydrogen absorption and diffusion behaviors, as well as the evolution of deformation microstructures induced by hydrogen in these alloys, and elucidates the mechanisms behind their HE resistance. Lastly, the paper projects future trends in the development of high-strength, toughness and HE-resistance HEAs.