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Hydrogen embrittlement of ultra-pure alloys of the inconel 600 type: Influence of the additions of elements (C, P, Sn, Sb)

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Abstract

The mechanical behavior of very high purity nickel base alloys of the Inconel 600 type that were simultaneously charged with hydrogen and deformed in tension was investigated. Experimental results show that this procedure decreases markedly the fracture strain of the pure 76 pct Ni-16 pct Cr-8 pct Fe alloy; cracks are observed after two to four pct elongation, and the fracture is completely intercrystalline. Hydrogen embrittlement appears as an intrinsic property of the Ni-Cr-Fe system in the sense that the grain boundary cohesion decreases when the purity of the alloy increases. The presence of carbon or phosphorus in the alloys increases grain boundary cohesion. The addition of metallic elements such as antimony or tin has relatively little effect on intergranular embrittlement.

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Authors and Affiliations

  1. Maitre de Recherche at Centre National de la Recherche Scientifique, Centre d’Etudes de Chimie Métallurgique, VITRY/Seine, France

    M. Cornet (Chargé de Recherche), C. Bertrand (Chimiste) & M. Da Cunha Belo

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  1. M. Cornet
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  2. C. Bertrand
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  3. M. Da Cunha Belo
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Cornet, M., Bertrand, C. & Belo, M.D.C. Hydrogen embrittlement of ultra-pure alloys of the inconel 600 type: Influence of the additions of elements (C, P, Sn, Sb). Metall Trans A 13, 141–144 (1982). https://doi.org/10.1007/BF02642425

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  • DOI: https://doi.org/10.1007/BF02642425

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