Impact of surface post-treatments on corrosion resistance in heat-treated laser-powder bed fused Nickel Aluminum Bronze

IF 4.6 2区工程技术 Q2 ENGINEERING, MANUFACTURING

CIRP Journal of Manufacturing Science and Technology Pub Date : 2025-06-18 DOI:10.1016/j.cirpj.2025.06.010

Khashayar Morshed-Behbahani, Nika Zakerin, Addison J. Rayner, Donald Paul Bishop, Ali Nasiri

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Abstract

This study investigates the effects of surface finishing on the passive behavior and corrosion response of C63020- Nickel Aluminum Bronze (NAB) alloy produced via laser-powder bed fusion (L-PBF) additive manufacturing, followed by annealing. To evaluate these effects, annealed L-PBF NAB in its as-printed surface finish was compared to samples subjected to two different surface treatments: one ground and another ground followed by polishing. Microstructural analysis of the samples revealed primarily globular and elongated κ_III phase precipitates distributed within the α-Cu matrix. Surface roughness measurements ranked the samples from highest to lowest as: as-printed NAB, ground NAB, and polished NAB. The results revealed that rougher surfaces enhanced electrochemical performance, as NAB passivity is a time-dependent process that benefits from an increased effective surface area. As a result, the ground-only samples demonstrated the highest corrosion resistance among the evaluated conditions.

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表面后处理对热处理激光粉末床熔接镍铝青铜耐蚀性的影响

研究了表面处理对C63020-镍铝青铜（NAB）合金的被动行为和腐蚀响应的影响，该合金采用激光粉末床熔合（L-PBF）增材制造，然后退火。为了评估这些影响，将退火后的L-PBF NAB与经过两种不同表面处理的样品进行了比较：一种是研磨，另一种是研磨后抛光。显微组织分析表明，α-Cu基体中主要分布有球状和细长的κIII相。表面粗糙度测量将样品从最高到最低排列为：印刷NAB，研磨NAB和抛光NAB。结果表明，粗糙的表面增强了电化学性能，因为NAB的钝化是一个随时间变化的过程，这得益于有效表面积的增加。结果表明，纯地面样品在评估条件中表现出最高的耐腐蚀性。

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来源期刊

CIRP Journal of Manufacturing Science and Technology Engineering-Industrial and Manufacturing Engineering

CiteScore

9.10

自引率

6.20%

发文量

166

审稿时长

63 days

期刊介绍： The CIRP Journal of Manufacturing Science and Technology (CIRP-JMST) publishes fundamental papers on manufacturing processes, production equipment and automation, product design, manufacturing systems and production organisations up to the level of the production networks, including all the related technical, human and economic factors. Preference is given to contributions describing research results whose feasibility has been demonstrated either in a laboratory or in the industrial praxis. Case studies and review papers on specific issues in manufacturing science and technology are equally encouraged.