有色金属科学与工程Issue(3)：32-37,6.DOI:10.13264/j.cnki.ysjskx.2014.03.006
不同相组成的硅黄铜组织性能的研究
Microstructure and performance of silicon brass with different phase composition
摘要
Abstract
The test techniques of OM, XRD and TG/DTA are used to study the microstructure, cutting proper-ties and dezincification corrosion resistance systematically of the lead-free silicon brass with different phase composition, namely(α+ β) , β and (β+ γ). Results show the cutting force of silicon brass with the matrix of(α+β) phases is low enough, however, it's chip morphology is dissatisfactory. The average thickness of dezincifica-tion layer is 438.12μm. The silicon brass with the matrix of (β+ γ) phases has the worst chip morphology and the highest Brinell hardness, namely 273.7 HB, which means the highest cutting force, increasing tool wear and reducing the tool life. The silicon brass with just single phase β has higher cutting force, but the smaller roll chips, with the best chip morphology, meanwhile it performs the minimum average dezincification layer, specifically 262.94 μm, during the dezincification corrosion resistance test. Therefore, the silicon brass with just single phase β has the best comprehensive properties, brass with the matrix of (β+ γ) phases is not suit-able for cutting brass, while the cutting performance and corrosion resistance of the brass with (α+β) phase are yet to be improved.关键词
无铅硅黄铜/切削性能/脱锌腐蚀Key words
lead-free silicon brass/cutting properties/dezincification corrosion分类
矿业与冶金引用本文复制引用
陈一胜,刘位江,朱志云,张雪辉,李勇..不同相组成的硅黄铜组织性能的研究[J].有色金属科学与工程,2014,(3):32-37,6.基金项目
国家自然科学基金资助项目（51261007）；江西省教育厅科技计划项目 （）
