Zn中间层对不同A1050/S45C FSW接头中铝组织演变的影响

IF 1.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Technology Pub Date : 2023-05-24 DOI:10.1080/02670836.2023.2216547

Mohamed Saleh, Y. Morisada, K. Ushioda, H. Fujii

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引用次数: 1

摘要

研究了不同A1050/S45C摩擦搅拌焊接接头在添加100µm和200µm厚Zn中间层及不添加中间层的情况下，A1050搅拌区的组织演变。在A1050搅拌区，溶解的Zn通过形成Al-Zn固溶体来促进其强化。Zn的加入使A1050晶粒细化，形成许多明确的高角度晶界。当Zn含量较高时，Zn对A1050的强化和晶粒细化作用明显。沿A1050晶界可能析出的富zn颗粒也可能通过延缓位错运动和增强不连续动态再结晶而促进A1050搅拌区强化。

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Microstructural evolution of aluminium in dissimilar A1050/S45C FSW joints by Zn interlayer

This study investigated the microstructural evolution of A1050 stir zones in dissimilar A1050/S45C friction stir-welded joints fabricated with 100- and 200-µm-thick Zn interlayers in addition to a third joint without any interlayer. The dissolved Zn in the A1050 stir zones contributed to its strengthening by forming Al–Zn solid solution. The addition of Zn refined the A1050 grains with many well-defined high-angle grain boundaries. The effect of Zn in the A1050 strengthening and grain refinement becomes apparent with a relatively high content of Zn. The possible precipitation of Zn-rich particles along the A1050 grain boundaries may also contribute to the A1050 stir zone strengthening by retarding the dislocation motion and enhancing the discontinuous dynamic recrystallisation.

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来源期刊

Materials Science and Technology 工程技术-材料科学：综合

CiteScore

2.70

自引率

5.60%

发文量

审稿时长

3 months

期刊介绍：《Materials Science and Technology》（MST） is an international forum for the publication of refereed contributions covering fundamental and technological aspects of materials science and engineering.