A high performance mechanically alloyed stainless steel composite coating via friction surfacing

IF 6.1 2区材料科学 Q1 MATERIALS SCIENCE, COATINGS & FILMS

Surface & Coatings Technology Pub Date : 2025-09-15 DOI:10.1016/j.surfcoat.2025.132685

Wai I. Lam , Ka Kit Leong , Chan Wa Tam , Qian Qiao , Yongyong Lin , Guoshun Yang , Dawei Guo , Chi Tat Kwok , Hongchang Qian , Dawei Zhang , Xiaogang Li , Lap Mou Tam

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引用次数: 0

Abstract

A novel metallic composite coating of mechanically alloyed SS316/SS420 stainless steels was fabricated successfully via friction surfacing (FS). Its mechanical properties, wear and corrosion resistance were significantly enhanced. The FSed composite coating was primarily composed of austenite, accounting for approximately 67.8 %, which was inherited from SS316 consumable rod and contained lath martensite (32.2 %) derived from the SS420 filler rod. The grain size of the coating was refined to 2.03–3.99 μm due to the dynamic recrystallization and phase transformation during FS. Meanwhile, with the aid of plastic flow mixing and diffusion of the metallic elements (Ni, Mo and Cr) from SS316 and SS420, the diffusion zone composed of two new phases – Ni-deficient austenite and Ni-rich martensite formed, which contribute to the enhancement of comprehensive properties and minimize the galvanic effect between austenite and martensite in corrosive media. In the present study, a guideline is provided to fabricate high performance alloys in an effective, environmentally friendly and low-cost method, which has substantial application potential.

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一种高性能机械合金不锈钢复合涂层，通过摩擦表面处理

采用摩擦堆焊技术成功制备了一种新型SS316/SS420不锈钢机械合金化金属复合涂层。其机械性能、耐磨性和耐腐蚀性均有显著提高。FSed复合涂层主要由奥氏体组成，约占67.8%，这是继承自SS316棒材的，含有来自SS420棒材的板条马氏体（32.2%）。在FS过程中，涂层发生了动态再结晶和相变，晶粒细化至2.03 ~ 3.99 μm。同时，在SS316和SS420金属元素（Ni、Mo和Cr）的塑性流动混合和扩散作用下，形成了由缺镍奥氏体和富镍马氏体两种新相组成的扩散区，有利于提高合金的综合性能，使腐蚀介质中奥氏体和马氏体之间的电偶效应最小化。本研究为高效、环保、低成本制备高性能合金提供了指导，具有很大的应用潜力。

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来源期刊

Surface & Coatings Technology 工程技术-材料科学：膜

CiteScore

10.00

自引率

11.10%

发文量

921

审稿时长

19 days

期刊介绍： Surface and Coatings Technology is an international archival journal publishing scientific papers on significant developments in surface and interface engineering to modify and improve the surface properties of materials for protection in demanding contact conditions or aggressive environments, or for enhanced functional performance. Contributions range from original scientific articles concerned with fundamental and applied aspects of research or direct applications of metallic, inorganic, organic and composite coatings, to invited reviews of current technology in specific areas. Papers submitted to this journal are expected to be in line with the following aspects in processes, and properties/performance: A. Processes: Physical and chemical vapour deposition techniques, thermal and plasma spraying, surface modification by directed energy techniques such as ion, electron and laser beams, thermo-chemical treatment, wet chemical and electrochemical processes such as plating, sol-gel coating, anodization, plasma electrolytic oxidation, etc., but excluding painting. B. Properties/performance: friction performance, wear resistance (e.g., abrasion, erosion, fretting, etc), corrosion and oxidation resistance, thermal protection, diffusion resistance, hydrophilicity/hydrophobicity, and properties relevant to smart materials behaviour and enhanced multifunctional performance for environmental, energy and medical applications, but excluding device aspects.