Hydrogen diffusion and trapping in a cryogenic processed high-Cr ferrous alloy

IF 6.6 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

npj Materials Degradation Pub Date : 2024-10-11 DOI:10.1038/s41529-024-00522-1

Patricia Jovičević-Klug, J. Manoj Prabhakar, Cristiano Kasdorf Giesbrecht, Tim M. Schwarz, Carsten Bonnekoh, Michael Rieth, Michael Rohwerder

引用次数: 0

Abstract

The effect of hydrogen diffusion and trapping was studied in a high-Cr ferrous alloy using an inverted scanning Kelvin probe and thermal desorption spectroscopy in correlation with microstructure and residual stress study. In addition, different processing of ferritic/martensitic 9Cr1WTaV alloy (EUROFER97) was tested in correlation with observed selected properties to observe induced changes in material degradation and surface. The activation energies for hydrogen traps were shown to have distinct peaks corresponding to different trapping mechanisms, including matrix dislocations and grain boundaries. For the cryogenically treated sample, an additional peak was also identified and correlated with increased carbide precipitation.

Abstract Image

查看原文本刊更多论文

低温加工高铬铁合金中的氢扩散和捕获

使用倒置扫描开尔文探针和热解吸光谱法，结合微观结构和残余应力研究，对高铬铁合金中氢扩散和捕获的影响进行了研究。此外，还测试了铁素体/马氏体 9Cr1WTaV 合金（EUROFER97）的不同加工工艺与所观察到的选定特性之间的相关性，以观察材料降解和表面的诱导变化。结果表明，氢陷阱的活化能具有不同的峰值，与不同的陷阱机制相对应，包括基体位错和晶界。对于经过低温处理的样品，还发现了一个额外的峰值，并与碳化物析出的增加相关联。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

npj Materials Degradation MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

7.80

自引率

7.80%

发文量

审稿时长

6 weeks

期刊介绍： npj Materials Degradation considers basic and applied research that explores all aspects of the degradation of metallic and non-metallic materials. The journal broadly defines ‘materials degradation’ as a reduction in the ability of a material to perform its task in-service as a result of environmental exposure. The journal covers a broad range of topics including but not limited to: -Degradation of metals, glasses, minerals, polymers, ceramics, cements and composites in natural and engineered environments, as a result of various stimuli -Computational and experimental studies of degradation mechanisms and kinetics -Characterization of degradation by traditional and emerging techniques -New approaches and technologies for enhancing resistance to degradation -Inspection and monitoring techniques for materials in-service, such as sensing technologies