Proposal of a hydrogen embrittlement index for a martensitic advanced high-strength steel

被引：12
|
作者：
Aiello, Francesco [1 ]
Beghini, Marco [1 ]
Belardini, Carlo Maria [1 ]
Bertini, Leonardo [1 ]
Macoretta, Giuseppe [1 ]
Monelli, Bernardo Disma [1 ]
Valentini, Renzo [1 ]
机构：
[1] Univ Pisa, Dept Civil & Ind Engn, Largo Lucio Lazzarino 2, I-56122 Pisa, Italy
来源：
CORROSION SCIENCE | 2023年 / 222卷
基金：
欧盟地平线“2020”;
关键词：
A; Steel; B; SEM; C; Hydrogen embrittlement; STRESS-CORROSION CRACKING; MECHANICAL-PROPERTIES; DELAYED FRACTURE; STAINLESS-STEEL; VOID NUCLEATION; STRAIN; PLASTICITY; DESORPTION; DIFFUSION; SIMULATION;
D O I：
10.1016/j.corsci.2023.111357
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This paper proposes a definition of a Hydrogen Embrittlement Index for assessing structural components made by a martensitic advanced high-strength steel. A material model, including a damage model and a fracture criterion, was developed to reproduce the tensile behaviour until fracture nucleation under different hydrogen concentrations. The analysis of the tests with different specimen geometries demonstrated that the maximum principal strain at fracture is correlated to hydrogen concentration, and it can be used to define the embrittlement index for quantifying the hydrogen susceptibility of material in a wide range of notch severity.
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页数：17
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