Comparison of hydrogen effects on additively manufactured and conventional austenitic steels

IF 4.4 2区工程技术 Q1 ENGINEERING, MECHANICAL Engineering Failure Analysis Pub Date : 2024-11-05 DOI:10.1016/j.engfailanal.2024.109042

Jonathan Nietzke , Florian Konert , Konstantin Poka , Benjamin Merz , Oded Sobol , Thomas Böllinghaus

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Abstract

Hydrogen and its derivatives are promising energy carriers for future renewable energy supplies. Austenitic stainless steels, such as AISI 316L, are commonly used in hydrogen transportation systems. While often thought to be resistant to hydrogen embrittlement, studies have shown that 316L is susceptible under certain conditions. As demand for hydrogen applications grows, additive manufacturing (AM) technologies offer design flexibility and customisation benefits. However, data on AM parts behaviour in hydrogen environments is lacking. This study investigates the influence of hydrogen on mechanical properties using slow strain rate testing (SSRT) on conventional AISI 304L, 316L and AM 316L specimens. The results indicate a greater effect of hydrogen on 304L compared to 316L, with AM 316L showing increased susceptibility. However, the ductility of AM 316L remains comparable to conventional 316L due to its initial ductility. The study provides insights into the performance of conventional and AM austenitic stainless steels in gaseous hydrogen environments.

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比较氢对快速成型钢和传统奥氏体钢的影响

氢及其衍生物是未来可再生能源供应中前景广阔的能源载体。奥氏体不锈钢（如 AISI 316L）通常用于氢运输系统。虽然人们通常认为 316L 具有抗氢脆的特性，但研究表明，在某些条件下 316L 很容易发生氢脆。随着氢气应用需求的增长，快速成型制造（AM）技术提供了设计灵活性和定制化优势。然而，有关 AM 零件在氢环境中行为的数据还很缺乏。本研究使用慢应变速率测试（SSRT）对传统的 AISI 304L、316L 和 AM 316L 试样进行了研究，探讨了氢对机械性能的影响。结果表明，与 316L 相比，氢对 304L 的影响更大，而 AM 316L 的敏感性更高。不过，由于 AM 316L 具有初始延展性，其延展性仍与传统 316L 相当。这项研究有助于深入了解传统奥氏体不锈钢和 AM 奥氏体不锈钢在气态氢环境中的性能。

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来源期刊

Engineering Failure Analysis 工程技术-材料科学：表征与测试

CiteScore

7.70

自引率

20.00%

发文量

956

审稿时长

47 days

期刊介绍： Engineering Failure Analysis publishes research papers describing the analysis of engineering failures and related studies. Papers relating to the structure, properties and behaviour of engineering materials are encouraged, particularly those which also involve the detailed application of materials parameters to problems in engineering structures, components and design. In addition to the area of materials engineering, the interacting fields of mechanical, manufacturing, aeronautical, civil, chemical, corrosion and design engineering are considered relevant. Activity should be directed at analysing engineering failures and carrying out research to help reduce the incidences of failures and to extend the operating horizons of engineering materials. Emphasis is placed on the mechanical properties of materials and their behaviour when influenced by structure, process and environment. Metallic, polymeric, ceramic and natural materials are all included and the application of these materials to real engineering situations should be emphasised. The use of a case-study based approach is also encouraged. Engineering Failure Analysis provides essential reference material and critical feedback into the design process thereby contributing to the prevention of engineering failures in the future. All submissions will be subject to peer review from leading experts in the field.