与其他金属成型技术相比,利用熔融长丝制造技术改善 17-4 PH SS 的摩擦腐蚀性能

IF 6.3 1区 工程技术 Q1 ENGINEERING, MECHANICAL Friction Pub Date : 2024-06-28 DOI:10.1007/s40544-024-0885-4
Cristina García-Cabezón, Juan Alfonso Naranjo, Celia García-Hernández, Cristina Berges, Gemma Herranz, Fernando Martín-Pedrosa
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引用次数: 0

摘要

熔融长丝制造(FFF)是增材制造工艺之一,因其操作简单、成本低廉而受到越来越多的关注。该技术类似于传统的金属注射成型(MIM)工艺,包括金属粉末和聚合物粘合剂的原料制备,然后通过逐层三维打印(FFF)或注射(MIM)制造绿色部件,最后进行脱脂和烧结。此外,这两种技术都能制造出接近致密的零件。本研究对加工方法的影响进行了深入研究。比较了使用 FFF 和 MIM 从粉末加工而成的 17-4 PH SS 样品与传统粉末冶金 (PM) 样品的孔隙率、微观结构、硬度、腐蚀和摩擦腐蚀行为。MIM 样品表现出最高的宏观和微观硬度,而 MIM 和 FFF 样品的腐蚀行为相似,但优于传统的 PM 样品。不过,FFF-as 制成的样品在耐摩擦腐蚀性能方面有显著改善,这可能是因为其微观结构中 delta 铁素体和保留奥氏体的比例较高。
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Using fused filament fabrication to improve the tribocorrosion behaviour of 17-4 PH SS in comparison to other metal forming techniques

Fused filament fabrication (FFF) is one of the additive manufacturing processes which has gained more interest because of its simplicity and low-cost. This technology is similar to the conventional metal injection moulding (MIM) process, consisting of the feedstock preparation of metal powder and polymer binders, followed by layer-by-layer 3D printing (FFF) or injection (MIM) to create green parts and, finally, debinding and sintering. Moreover, both technologies provide near-dense parts. This work presents an in-depth study of the processing method’s influence. The porosity, microstructure, hardness, corrosion, and tribocorrosion behaviour are compared for 17-4 PH SS samples processed from powder by additive manufacturing using FFF and MIM, as well as conventional powder metallurgy (PM) samples. MIM samples exhibited the highest macro and microhardness, while corrosion behaviour was similar for both MIM and FFF samples, but superior in comparison to conventional PM samples. However, the FFF-as fabricated samples displayed a significant improvement in tribocorrosion resistance that could be explained by the higher proportion of delta ferrite and retained austenite in their microstructure.

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来源期刊
Friction
Friction Engineering-Mechanical Engineering
CiteScore
12.90
自引率
13.20%
发文量
324
审稿时长
13 weeks
期刊介绍: Friction is a peer-reviewed international journal for the publication of theoretical and experimental research works related to the friction, lubrication and wear. Original, high quality research papers and review articles on all aspects of tribology are welcome, including, but are not limited to, a variety of topics, such as: Friction: Origin of friction, Friction theories, New phenomena of friction, Nano-friction, Ultra-low friction, Molecular friction, Ultra-high friction, Friction at high speed, Friction at high temperature or low temperature, Friction at solid/liquid interfaces, Bio-friction, Adhesion, etc. Lubrication: Superlubricity, Green lubricants, Nano-lubrication, Boundary lubrication, Thin film lubrication, Elastohydrodynamic lubrication, Mixed lubrication, New lubricants, New additives, Gas lubrication, Solid lubrication, etc. Wear: Wear materials, Wear mechanism, Wear models, Wear in severe conditions, Wear measurement, Wear monitoring, etc. Surface Engineering: Surface texturing, Molecular films, Surface coatings, Surface modification, Bionic surfaces, etc. Basic Sciences: Tribology system, Principles of tribology, Thermodynamics of tribo-systems, Micro-fluidics, Thermal stability of tribo-systems, etc. Friction is an open access journal. It is published quarterly by Tsinghua University Press and Springer, and sponsored by the State Key Laboratory of Tribology (TsinghuaUniversity) and the Tribology Institute of Chinese Mechanical Engineering Society.
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