双相不锈钢磁场抑制相分离的原位SANS观察

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

Scripta Materialia Pub Date : 2025-05-15 DOI:10.1016/j.scriptamat.2025.116760

Jianling Liu , Yadunandan Das , Pavel Korzhavyi , Stephen M. King , Joakim Odqvist , Peter Hedström

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引用次数: 0

摘要

在450°C等温热处理时，对22Cr-5Ni和25Cr-7Ni两种双相不锈钢（wt.%）在1.5 T和不施加磁场的情况下进行了原位小角中子散射（SANS）实验。两种钢的相分离动力学均受到外加磁场的抑制；然而，在25Cr-7Ni中抑制更为明显，其中相分离几乎被消除。每种钢中外场对磁能贡献的不同解释了它们相分离程度的不同。这些发现被认为对减轻Fe-Cr-Ni基合金的低温脆化具有重大的技术意义。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

In-situ SANS observations on the magnetic-field-suppressed phase separation in duplex stainless steels

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In-situ SANS observations on the magnetic-field-suppressed phase separation in duplex stainless steels

In-situ small-angle neutron scattering (SANS) experiments, with and without an applied magnetic field of 1.5 T, were performed for two duplex stainless steels: 22Cr-5Ni and 25Cr-7Ni (wt.%) during isothermal heat treatment at 450

^{\circ}

C. The kinetics of phase separation was suppressed by the external magnetic field in both steels; however, the suppression was much more pronounced in 25Cr-7Ni, where phase separation was nearly eliminated. The difference in magnetic energy contributions from the external field in each steel explain their different degrees of phase separation. The findings are believed to have large technical implications for mitigating low-temperature embrittlement in Fe-Cr-Ni based alloys.

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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.