Growth of various in whiskers on Cr-Al-B MAB phases formed during hot-dip aluminizing and subsequent thermal diffusion treatment of Fe-Cr-B cast steel

IF 4.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Intermetallics Pub Date : 2025-06-23 DOI:10.1016/j.intermet.2025.108891

Xianman Zhang , Ren Fu , Baichuan Liu , Zicheng Ling

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引用次数: 0

Abstract

The synthesis of MAB phases and their solid solutions, which were candidates of precursor to prepare the MBenes with promising in energy storage and electrocatalytic applications, were generally complex. Compared with wide growth of whiskers on the MAX phases, the A-site element whiskers growth on the MAB phases were rare. Cr-Al-B MAB phase within the periodic layered structure (PLS) coating could be formed during hot-dip aluminizing (HDA) and subsequent thermal diffusion treatment (TDT) of Fe-Cr-B cast steel. Herein, the interfacial microstructures of the HDA of Fe-Cr-B cast steel in Al alloy melts containing Bi, In and Sn and subsequent TDT, especially the growth of whiskers on the whitened Cr-Al-B MAB phases, were systematically studied. The results demonstrated that, In and its combinations with Bi could partially replace the Al atoms in the Cr-Al-B MAB phase, resulting the both effects that the whitening of the Cr-Al-B MAB phases within the PLS and the spontaneous growth of whiskers with different compositions on them. However, the growth of Bi whisker could be neglected, compared with wide growth of various In whiskers. The shape of γ-In(Sn) rapid spontaneous growth in the vacuum chamber of SEM was complex and was not the prism structure of Sn whisker growth under the vacuum condition, which was related to the compositions of whiskers. This study would further enrich the theory of whisker growth on the MAB/MAX phases.

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Fe-Cr-B铸钢在热浸渗铝和随后的热扩散处理过程中形成的Cr-Al-B MAB相上各种晶须的生长

MAB相及其固溶体是制备具有储能和电催化应用前景的MBenes的前驱体候选物，其合成通常是复杂的。与MAX相的晶须生长较宽相比，MAB相的a位元素晶须生长较少。Fe-Cr-B铸钢在热浸渗铝（HDA）和后续热扩散处理（TDT）过程中，可在周期性层状结构（PLS）涂层内形成Cr-Al-B MAB相。本文系统地研究了Fe-Cr-B铸钢在含Bi、in和Sn的铝合金熔体及随后的TDT中HDA的界面组织，特别是白化Cr-Al-B MAB相上晶须的生长。结果表明，In及其与Bi的结合可以部分取代Cr-Al-B MAB相中的Al原子，从而导致PLS内Cr-Al-B MAB相的白化和其上不同成分的晶须的自发生长。与各种In晶须的广泛生长相比，Bi晶须的生长可以忽略不计。SEM真空室中快速自发生长的γ-In（Sn）形状复杂，并不是真空条件下Sn晶须生长的棱柱状结构，这与晶须成分有关。本研究将进一步丰富MAB/MAX相晶须生长理论。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Intermetallics 工程技术-材料科学：综合

CiteScore

7.80

自引率

9.10%

发文量

291

审稿时长

37 days

期刊介绍： This journal is a platform for publishing innovative research and overviews for advancing our understanding of the structure, property, and functionality of complex metallic alloys, including intermetallics, metallic glasses, and high entropy alloys. The journal reports the science and engineering of metallic materials in the following aspects: Theories and experiments which address the relationship between property and structure in all length scales. Physical modeling and numerical simulations which provide a comprehensive understanding of experimental observations. Stimulated methodologies to characterize the structure and chemistry of materials that correlate the properties. Technological applications resulting from the understanding of property-structure relationship in materials. Novel and cutting-edge results warranting rapid communication. The journal also publishes special issues on selected topics and overviews by invitation only.