表面机械轧制处理下纳米中钢中Cr的应变增强扩散

IF 2.9 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materialia Pub Date : 2025-01-05 DOI:10.1016/j.mtla.2025.102336

S. Zhang , Y.B. Lei , Q. Jiao , Z.B. Wang

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引用次数: 0

摘要

采用表面机械轧制处理（SMRT）在IF钢表面制备了纳米结构的表面层。随后，通过沉积薄Cr涂层并再次进行SMRT，研究了Cr在变形纳米结构面层中的扩散行为。结果表明，在室温下获得了超高的扩散系数（~ 2.9 × 10−16 m2 s-1），导致Cr涂层与纳米结构衬底之间形成了（Cr, Fe）固溶体过渡区。在中频钢近表面层，SMRT施加的高应变和应变速率以及不同晶界的存在诱发了超高速扩散。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Strain-enhanced diffusion of Cr in nanostructured IF steel under surface mechanical rolling treatment

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Strain-enhanced diffusion of Cr in nanostructured IF steel under surface mechanical rolling treatment

A nanostructured surface layer was produced on IF steel by means of surface mechanical rolling treatment (SMRT). Subsequently, the diffusion behavior of Cr was studied in the nanostructured surface layer under deformation by depositing a thin Cr coating and re-submitting to SMRT. The results revealed that an ultra-high diffusion coefficient (∼2.9 × 10⁻¹⁶ m² s^-1) is achieved at room temperature, resulting in the formation of a (Cr, Fe) solid solution transition region between Cr coating and nanostructured substrate. The extra-fast diffusion should be induced by the high strain and strain rate exerted by SMRT, as well as the existence of various grain boundaries, in the near surface layer of IF steel.

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来源期刊

Materialia MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

6.40

自引率

2.90%

发文量

345

审稿时长

36 days

期刊介绍： Materialia is a multidisciplinary journal of materials science and engineering that publishes original peer-reviewed research articles. Articles in Materialia advance the understanding of the relationship between processing, structure, property, and function of materials. Materialia publishes full-length research articles, review articles, and letters (short communications). In addition to receiving direct submissions, Materialia also accepts transfers from Acta Materialia, Inc. partner journals. Materialia offers authors the choice to publish on an open access model (with author fee), or on a subscription model (with no author fee).