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Anelastic mechanical loss spectrometry of hydrogen in austenitic stainless steels

机译:奥氏体不锈钢中氢的非弹性机械损耗光谱法

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摘要

Atomic distribution of hydrogen, its elemental diffusion jumps and its interaction with dislocations in a number of austenitic stainless steels are studied with anelastic mechanical loss (AML) spectrometry in combination with the hydrogen thermal desorption method. Austenitic stainless steels of different chemical composition, namely, AISI 310, AISI 201, and AISI 301LN, as well as LDX 2101 duplex stainless steel are studied to clarify the role of different alloying elements on the hydrogen behavior. Activation analyses of the hydrogen Snoek-like peaks are performed with their decomposition to sets of Gaussian components. Fine structure of the composite hydrogen peaks is analyzed under the assumption that each component corresponds to diffusion transfer of hydrogen between octahedral positions with certain atomic compositions of the nearest neighbouring lattice sites. An additional component originating from hydrogen-dislocation interaction is considered. Binding energies for hydrogen-dislocation interaction are also estimated for the studied austenitic stainless steels.
机译:通过非弹性机械损耗(AML)光谱结合氢热脱附方法研究了氢在许多奥氏体不锈钢中的氢原子分布,元素扩散跃迁以及与位错的相互作用。研究了化学成分不同的奥氏体不锈钢AISI 310,AISI 201和AISI 301LN以及LDX 2101双相不锈钢,以阐明不同合金元素对氢行为的作用。对氢类Snoek峰进行活化分析,并将其分解为高斯分量集。在以下假设下分析复合氢峰的精细结构:每个组分对应于八面体位置之间氢的扩散转移,具有最接近的相邻晶格位点的某些原子组成。考虑了源自氢-位错相互作用的附加组分。还研究了奥氏体不锈钢的氢-位错相互作用的结合能。

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