Effect of Cu content on the microstructure and properties of sintered Fe-0.8C-xCu antifriction materials

IF 1.8 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Research Express Pub Date : 2024-09-08 DOI:10.1088/2053-1591/ad72cf

Jiaxin Li, Han Feng, Jianhua Zhang, Pengqi Chen and Jigui Cheng

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Abstract

Ferrous antifriction materials (FAMs) play a crucial role in powder metallurgy. Previous studies have primarily focused on exploring the antifriction properties of Fe-C-Cu materials with low copper content (0–5 wt%), while there have been fewer studies on high copper content FAMs. In this study, to investigate the effect of Cu content on the microstructure and properties of sintered FAMs, Fe-0.8C-xCu (x = 5–25 wt%) materials were prepared by powder metallurgy method. The density, microstructure, mechanical performance, friction and wear properties of the samples were analyzed. The results demonstrated a significant change in the relative density, hardness, friction and wear properties of sintered Fe-0.8C-xCu samples with increasing Cu content. Particularly, the Fe-0.8C-15Cu samples exhibited outstanding properties, with a relative density of 77.8%, a hardness of 43 HRB, crushing strength of 380 MPa, an average friction coefficient of 0.21, and a wear rate of 1.36 × 10−8 mm3 N·mm−1. The primary wear mechanisms of the Fe-0.8C-xCu specimens include abrasive wear, adhesion wear, chafing fatigue, pitting, and oxidation. This study aims to provide an experimental and theoretical basis for the development of ferrous antifriction materials suitable for heavy-load conditions.

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铜含量对烧结 Fe-0.8C-xCu 抗摩擦材料微观结构和性能的影响

黑色金属减摩材料（FAMs）在粉末冶金中起着至关重要的作用。以往的研究主要集中在探索低铜含量（0-5 wt%）的铁-铜-铜材料的减摩性能，而对高铜含量 FAMs 的研究较少。本研究采用粉末冶金法制备了 Fe-0.8C-xCu（x = 5-25 wt%）材料，以探究铜含量对烧结 FAM 的微观结构和性能的影响。分析了样品的密度、微观结构、机械性能、摩擦和磨损性能。结果表明，随着铜含量的增加，烧结的 Fe-0.8C-xCu 样品的相对密度、硬度、摩擦和磨损性能都发生了显著变化。特别是，Fe-0.8C-15Cu 样品表现出卓越的性能，其相对密度为 77.8%，硬度为 43 HRB，压碎强度为 380 MPa，平均摩擦系数为 0.21，磨损率为 1.36 × 10-8 mm3 N-mm-1。Fe-0.8C-xCu 试样的主要磨损机制包括磨料磨损、粘着磨损、摩擦疲劳、点蚀和氧化。这项研究旨在为开发适用于重载条件的黑色减摩材料提供实验和理论依据。

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 Research Express MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

4.50

自引率

4.30%

发文量

640

审稿时长

12 weeks

期刊介绍： A broad, rapid peer-review journal publishing new experimental and theoretical research on the design, fabrication, properties and applications of all classes of materials.