Experimental microalloyed steel subjected to tempering heat treatments and its effect on hydrogen embrittlement
The influence of both, time and annealing temperature over the susceptibility to hydrogen embrittlement was evaluated in experimental microalloyed steel. Tempering heat treatments were carried out in a temperature range of 200-600 °C with several heat treatment times. They were hydrogen charged cath...
| Autores: | , , , , |
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| Tipo de documento: | artigo |
| Estado: | Versão publicada |
| Data de publicação: | 2016 |
| País: | Panamá |
| Recursos: | Universidad Tecnológica de Panamá |
| Repositório: | Repositorio Institucional de documento digitales de acceso abierto de la UTP |
| Idioma: | espanhol |
| OAI Identifier: | oai:ridda2.utp.ac.pa:123456789/1806 |
| Acesso em linha: | http://revistas.utp.ac.pa/index.php/id-tecnologico/article/view/590 http://ridda2.utp.ac.pa/handle/123456789/1806 |
| Access Level: | Acceso aberto |
| Palavra-chave: | Microalloyed steel, hydrogen embrittlement, Heat treatment Acero microaleado, fragilización por hidrógeno, tratamientos térmicos. |
| Resumo: | The influence of both, time and annealing temperature over the susceptibility to hydrogen embrittlement was evaluated in experimental microalloyed steel. Tempering heat treatments were carried out in a temperature range of 200-600 °C with several heat treatment times. They were hydrogen charged cathodically in a solution of H2SO4, using a current density of 40 mA/cm² during 1 and 12 hours of exposure. Susceptibility to hydrogen embrittlement and its effect on the mechanical properties in different treatment conditions were evaluated by tensile test. Also, were conducted hydrogen permeability tests to determine effective diffusion coefficients (Deff). The results showed that the mechanical properties decrease in ultimate tensile strength (UTS) and yield stress (YS) values as function of charging cathodic hydrogen times, without a clear trend over time and temperature heat treatment. |
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