铜业工程Issue(2)：1-9,9.DOI:10.3969/j.issn.1009-3842.2026.02.001
再生H65黄铜中铁元素对其组织和性能的影响
Influence of Iron on Microstructure and Properties of Recycled H65 Brass
摘要
Abstract
Recycling and reuse of copper alloys constitutes a crucial component in China's copper alloy production.During the recycling of brass,iron(Fe)is a prevalent impurity element that can significantly impact brass properties,thus necessitating stringent limitation of iron in brass.This study achieved precise control of Fe content during brass recycling by regulating the input of recycled materials,and systematically investigated the influence of iron on microstructure and properties of recycled H65 brass.Results demonstrated that with increasing Fe content in brass,grains were significantly refined,and the ultimate tensile strength,yield strength and plasticity increased.However,this led to a decrease in elongation and electrical conductivity.Specifically,as Fe content increased from 0.014%to 0.051%,the average grain size decreased from 64.2 μm to 48.9 μm,yield strength increased from 105.9 MPa to 122.1 MPa,and hardness increased from 74.5 HV to 88.1 HV.Conversely,elongation decreased from 62.6%to 54.5%,and electrical conductivity decreased from 27.5%IACS to 25.8%IACS.On the other hand,electrochemical tests revealed that the average corrosion rate exhibited an initial decrease followed by an increase,indicating corrosion resistance initially improved but subsequently deteriorated with increasing Fe content.When Fe content was below 0.04%,solid solution strengthening predominated.Further increases may lead to elemental segregation or even precipitation.This research offered systematical guidance for optimizing economic benefits,controlling microstructural evolution,increasing corrosion resistance,and improving processing performance of recycled brass.关键词
再生黄铜/铁元素/力学性能/耐蚀性Key words
reclaimed brass/iron/mechanical property/corrosion resistance property分类
矿业与冶金引用本文复制引用
尤治博,钱高祥,赖士浩,张宇博,王同敏,李廷举..再生H65黄铜中铁元素对其组织和性能的影响[J].铜业工程,2026,(2):1-9,9.基金项目
国家自然科学基金项目(52171135) （52171135）
重点新材料研发及应用国家科技重大专项(2025ZD0611000,子课题:2025ZD0611003)资助 （2025ZD0611000,子课题:2025ZD0611003）
