Function of Hydrogen in Embrittlement of High-strength Steels

By M. Nagumo. 2001

219 citations recorded by the source corpus.

Various models so far proposed for the mechanism of hydrogen embrittlement (HE) of steels are critically reviewed with respect to the manifestation of hydrogen in the fracture process. Recent studies that elucidate the hydrogen states and their relevance to HE are discussed. Particular attention is paid to the role of deformation-induced defects that interact with hydrogen. A model is proposed in which increased vacancy density and agglomeration lead to the promotion of failure. The model ascribes HE to the context of ductile fracture in which vacancies play the primary role.

Subfields: Mechanical Engineering, Mechanics of Materials, Metals and Alloys

View Paper: https://www.semanticscholar.org/paper/895f84443865177a224c404c0cbebfc5df00e95b

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Mechanical Engineering

1. Dierk Raabe
2. K. Tsuzaki
3. Motomichi Koyama
4. E. Akiyama
5. O. A. Zambrano
6. D. Ponge
7. Young‐kook Lee
8. M. Preuss

In Mechanics of Materials

1. D. Ponge
2. Dierk Raabe
3. E. Akiyama
4. Young‐kook Lee
5. Franz Roters
6. Philip Eisenlohr
7. O. A. Zambrano
8. T. Bieler

In Metals and Alloys

1. Dierk Raabe
2. Motomichi Koyama
3. E. Akiyama
4. K. Tsuzaki
5. Young‐kook Lee
6. D. Ponge
7. Zhenbo Zhang
8. M. Preuss

Citations in the corpus

• Hydrogen-assisted failure in Ni-based superalloy 718 studied under in situ hydrogen charging: The role of localized deformation in crack propagation (2017, background): “Ductile fracture assumes initiation, growth, and coalescence of voids, and ductile crack growth resistance is determined by the distribution of nucleating voids and the stress state in the crack front [47].”
• Overview of hydrogen embrittlement in high-Mn steels (2017, background): “More specifically, such confined and hydrogen-enhanced plasticity [66e68] is suggested to result in an increased density of deformation-related vacancies, which are further stabilized by instantaneous decoration by the abundant hydrogen [69,70].”
• Hydrogen assisted crack initiation and propagation in a nickel-based superalloy (2016, background): “Besides the HEDE and HELP mechanisms, the hydrogen enhanced vacancy stabilization mechanism has also been proposed [10,11,29].”