Microstructure evolution and mechanical properties of cold sprayed stainless steel SS304L on structural steel S355J0

IF 7 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: A Pub Date : 2025-09-27 DOI:10.1016/j.msea.2025.149190

Yixun Wang , Bo Ching Wong , Cheng Zhang , Tak-Ming Chan , Seiichiro Tsutsumi , Robert Voyle

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引用次数: 0

Abstract

Cold spray is a promising technology for manufacturing and repair of steel construction because of its low heat input and high efficiency. However, the unfavourable strength-ductility synergy is a critical challenge that prevents its further application. The present work aims to investigate the performance of stainless steel SS304L deposited on structural steel S355J0 by cold spray, considering the effects of particle velocity and post heat treatment. The dislocation evolution and recrystallisation behaviour of cold sprayed SS304L steel during the annealing were studied through a combination of grain misorientation mapping, dislocation density quantification and fracture mechanism analysis. The correlation between dislocation evolution, metallurgical bonding behaviour and mechanical properties was elucidated. The results suggest that the as-sprayed deposits show a brittle fracture with particle boundary failure. Annealing above the recrystallisation temperature can eliminate the dislocations and accelerate the interface diffusion of particles, thus achieving the improvement of strength-ductility synergy. The outcome of this study demonstrates the potential of cold spray as an alternative additive manufacturing or repair technology for steel construction.

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冷喷涂不锈钢SS304L在结构钢S355J0上的组织演变及力学性能

冷喷涂因其热输入少、效率高而成为一种很有前途的钢结构制造和修复技术。然而，不利的强度-延性协同作用是阻碍其进一步应用的关键挑战。考虑颗粒速度和后热处理的影响，研究了冷喷涂沉积不锈钢SS304L在结构钢S355J0上的性能。采用晶粒位错定位、位错密度量化和断裂机理分析相结合的方法，研究了冷喷SS304L钢在退火过程中的位错演化和再结晶行为。阐明了位错演化、冶金结合行为与力学性能之间的关系。结果表明：喷射后的镀层表现为脆性断裂，并伴有颗粒边界破坏；高于再结晶温度的退火可以消除位错，加速颗粒的界面扩散，从而提高强度-塑性协同效应。这项研究的结果表明，冷喷涂作为一种替代增材制造或钢结构修复技术的潜力。

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

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

CiteScore

11.50

自引率

15.60%

发文量

1811

审稿时长

31 days

期刊介绍： Materials Science and Engineering A provides an international medium for the publication of theoretical and experimental studies related to the load-bearing capacity of materials as influenced by their basic properties, processing history, microstructure and operating environment. Appropriate submissions to Materials Science and Engineering A should include scientific and/or engineering factors which affect the microstructure - strength relationships of materials and report the changes to mechanical behavior.