脉冲电流使充氢介质Mn钢的塑性完全恢复

IF 5.3 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Scripta Materialia Pub Date : 2025-03-26 DOI:10.1016/j.scriptamat.2025.116663

Bin Hu , Shiji Geng , Nima Babaei , Alexander Gramlich , Yichao Bai , Wenting Zhao , Junkui Li , Xinjun Sun , Caijun Zhang , Ulrich Krupp , Haiwen Luo

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引用次数: 0

摘要

结果表明，在250℃下对中Mn钢进行电脉冲处理（EPT），可以去除马氏体和奥氏体中保存的所有H原子；结果表明，由于氢脆而严重恶化的延性和强度均得到了完全恢复。相比之下，在相同温度下，常规热处理（CHT）只完全去除马氏体中的H原子，而在奥氏体中保留了0.3 wt ppm H，导致损坏的延展性仅恢复了约50%。为了解释这一意想不到的现象，本文在微观结构检查和h -解吸动力学测量的基础上，讨论了EPT释放h原子的相关机理。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Fully restoring the damaged ductility of H-charged medium Mn steel via pulsed current

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Fully restoring the damaged ductility of H-charged medium Mn steel via pulsed current

It was found that the electric pulsed treatment (EPT) performed at 250 °C on a medium Mn steel (MMnS) can remove all the H atoms preserved in martensite and austenite by the electrochemical H-charging; as a result, the severely deteriorated ductility and strength due to hydrogen embrittlement (HE) were both fully restored. In contrast, only the H-atoms in martensite were completely removed by the conventional heat treatment (CHT) at the same temperature, but 0.3 wt ppm H remained in austenite, resulting in the damaged ductility just restored by about 50 %. The relevant mechanism on releasing H-atoms by EPT is discussed on the basis of microstructural examinations and H-desorption kinetic measurements for explaining such an unexpected phenomenon.

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来源期刊

Scripta Materialia 工程技术-材料科学：综合

CiteScore

11.40

自引率

5.00%

发文量

581

审稿时长

34 days

期刊介绍： Scripta Materialia is a LETTERS journal of Acta Materialia, providing a forum for the rapid publication of short communications on the relationship between the structure and the properties of inorganic materials. The emphasis is on originality rather than incremental research. Short reports on the development of materials with novel or substantially improved properties are also welcomed. Emphasis is on either the functional or mechanical behavior of metals, ceramics and semiconductors at all length scales.