Hydrogen solubility, diffusivity, and trapping in quenched and tempered Ni-containing steels

被引：8

作者：

Chalfoun, Dannisa R. ^{[1
,2
,3
]}

Kappes, Mariano A. ^{[1
,2
,4
]}

Bruzzoni, Pablo ^{[4
]}

Iannuzzi, Mariano ^{[5
]}

机构：

[1] Inst Sabato UNSAM CNEA, Av Gral Paz 1499,B1650, San Martin, Buenos Aires, Argentina

[2] Consejo Nacl Invest Cient & Tecn, Godoy Cruz 2290,C1425FBQ, Buenos Aires, DF, Argentina

[3] YPF Tecnol, Av Petr S-N,B1923, Berisso, Buenos Aires, Argentina

[4] Comis Nacl Energia Atom, Av Libertador 8250,C1429BNP, Buenos Aires, DF, Argentina

[5] Curtin Univ, Curtin Corros Ctr, Kent St, Perth, WA 6102, Australia

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2022年 / 47卷 / 05期

关键词：

Low alloy steels; Nickel; Hydrogen trapping; Diffusion; Permeability; Hydrogen embrittlement; SULFIDE STRESS CRACKING; CORROSION CRACKING; PIPELINE STEEL; NICKEL; RESISTANCE; PERMEATION; IRON; MICROSTRUCTURE; EMBRITTLEMENT; TRANSPORT;

D O I：

10.1016/j.ijhydene.2021.10.251

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Hydrogen permeation experiments were performed in quenched and tempered (Q&T) low alloy steels with varying Ni contents exposed to 1 bar H2 at 30, 50 and 70 degrees C. From the analysis of build-up and decay transients, it is concluded that the permeation coefficient, the apparent diffusion coefficient (Dapp) and the concentration of hydrogen in interstitial sites on the charging surface (C0) decreases as the Ni concentration increases from 0 to 5 wt.%. The total concentration of hydrogen on the charging surface (C0;r), which includes interstitial and reversibly trapped hydrogen, is about an order of magnitude larger than C0. The hydrogen binding energy (Eb) and trap density (Nr) were calculated from the Dapp vs. temperature dependence, under the hypothesis of low trap occupancy. C0;r, Eb and Nr do not show a clear correlation with Ni content, indicating that trapping is controlled by a microstructural feature other than Ni atoms in solid solution. (c) 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：3141 / 3156

页数：16