铋对球墨铸铁微观结构和性能的影响

IF 2.6 3区 材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING International Journal of Metalcasting Pub Date : 2024-07-31 DOI:10.1007/s40962-024-01421-6
S. Boonmee, W. Waenthongkham, K. Worakhut
{"title":"铋对球墨铸铁微观结构和性能的影响","authors":"S. Boonmee, W. Waenthongkham, K. Worakhut","doi":"10.1007/s40962-024-01421-6","DOIUrl":null,"url":null,"abstract":"<p>This study explores the effect of bismuth on ductile iron to enhance its mechanical properties and to prevent the formation of chunky graphite. Various heats of ductile iron were produced with varying bismuth (0.000–0.010 wt%Bi). Microscopic examinations, Brinell hardness tests, and tension tests were conducted to characterize the samples. The results indicate that Bi influences the microstructure, nodule count, hardness, and tensile strength of the ductile iron, with optimal amount of Bi (0.005–0.007 wt%Bi) depending on section thickness. Bi prevented the carbide formation and increased the nodule count, leading to improved mechanical properties. In addition, the study demonstrated that Ce/Bi values of 1.29–1.60 were corresponding levels that showed optimal microstructure and properties. Thermal analysis demonstrated the inoculation effect of Bi addition by shifting TE<sub>low</sub> and TE<sub>high</sub> toward the stable eutectic temperature. Electron Probe Microanalysis (EPMA) results showed that Bi oxide and sulfide were found at the graphite cores as heterogeneous nucleation sites during solidification.</p>","PeriodicalId":14231,"journal":{"name":"International Journal of Metalcasting","volume":null,"pages":null},"PeriodicalIF":2.6000,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effect of Bismuth on Microstructure and Properties of Ductile Iron\",\"authors\":\"S. Boonmee, W. Waenthongkham, K. Worakhut\",\"doi\":\"10.1007/s40962-024-01421-6\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>This study explores the effect of bismuth on ductile iron to enhance its mechanical properties and to prevent the formation of chunky graphite. Various heats of ductile iron were produced with varying bismuth (0.000–0.010 wt%Bi). Microscopic examinations, Brinell hardness tests, and tension tests were conducted to characterize the samples. The results indicate that Bi influences the microstructure, nodule count, hardness, and tensile strength of the ductile iron, with optimal amount of Bi (0.005–0.007 wt%Bi) depending on section thickness. Bi prevented the carbide formation and increased the nodule count, leading to improved mechanical properties. In addition, the study demonstrated that Ce/Bi values of 1.29–1.60 were corresponding levels that showed optimal microstructure and properties. Thermal analysis demonstrated the inoculation effect of Bi addition by shifting TE<sub>low</sub> and TE<sub>high</sub> toward the stable eutectic temperature. Electron Probe Microanalysis (EPMA) results showed that Bi oxide and sulfide were found at the graphite cores as heterogeneous nucleation sites during solidification.</p>\",\"PeriodicalId\":14231,\"journal\":{\"name\":\"International Journal of Metalcasting\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":2.6000,\"publicationDate\":\"2024-07-31\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"International Journal of Metalcasting\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1007/s40962-024-01421-6\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"METALLURGY & METALLURGICAL ENGINEERING\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Metalcasting","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1007/s40962-024-01421-6","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"METALLURGY & METALLURGICAL ENGINEERING","Score":null,"Total":0}
引用次数: 0

摘要

本研究探讨了铋对球墨铸铁的影响,以提高其机械性能并防止形成块状石墨。使用不同的铋(0.000-0.010 wt%铋)生产了不同加热温度的球墨铸铁。对样品进行了显微镜检查、布氏硬度测试和拉力测试,以确定其特性。结果表明,铋会影响球墨铸铁的微观结构、结核数量、硬度和抗拉强度,最佳铋含量(0.005-0.007 wt%Bi)取决于截面厚度。Bi 阻止了碳化物的形成并增加了结核数量,从而改善了机械性能。此外,研究还表明,Ce/Bi 值为 1.29-1.60 的相应水平可显示出最佳的微观结构和性能。热分析表明,加入 Bi 后,TElow 和 TEhigh 向稳定共晶温度移动,从而产生了接种效应。电子探针显微分析(EPMA)结果表明,在凝固过程中,氧化 Bi 和硫化物作为异质成核点出现在石墨芯上。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

摘要图片

查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
Effect of Bismuth on Microstructure and Properties of Ductile Iron

This study explores the effect of bismuth on ductile iron to enhance its mechanical properties and to prevent the formation of chunky graphite. Various heats of ductile iron were produced with varying bismuth (0.000–0.010 wt%Bi). Microscopic examinations, Brinell hardness tests, and tension tests were conducted to characterize the samples. The results indicate that Bi influences the microstructure, nodule count, hardness, and tensile strength of the ductile iron, with optimal amount of Bi (0.005–0.007 wt%Bi) depending on section thickness. Bi prevented the carbide formation and increased the nodule count, leading to improved mechanical properties. In addition, the study demonstrated that Ce/Bi values of 1.29–1.60 were corresponding levels that showed optimal microstructure and properties. Thermal analysis demonstrated the inoculation effect of Bi addition by shifting TElow and TEhigh toward the stable eutectic temperature. Electron Probe Microanalysis (EPMA) results showed that Bi oxide and sulfide were found at the graphite cores as heterogeneous nucleation sites during solidification.

求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
International Journal of Metalcasting
International Journal of Metalcasting 工程技术-冶金工程
CiteScore
4.20
自引率
42.30%
发文量
174
审稿时长
>12 weeks
期刊介绍: The International Journal of Metalcasting is dedicated to leading the transfer of research and technology for the global metalcasting industry. The quarterly publication keeps the latest developments in metalcasting research and technology in front of the scientific leaders in our global industry throughout the year. All papers published in the the journal are approved after a rigorous peer review process. The editorial peer review board represents three international metalcasting groups: academia (metalcasting professors), science and research (personnel from national labs, research and scientific institutions), and industry (leading technical personnel from metalcasting facilities).
期刊最新文献
Effect of Austenitization Time on Corrosion and Wear Resistance in Austempered Ductile Iron From the Editor Numerical Simulation and Experimental Investigation of Microstructure Evolution and Flow Behavior in the Rheological Squeeze Casting Process of A356 Alloy The Effect of N Content on the Microstructure and Wear Resistance of Improved High-Carbon Chromium Bearing Steel Enhanced Classification of Refractory Coatings in Foundries: A VPCA-Based Machine Learning Approach
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1