研究具有微观结构变化的黄铜合金的断裂机械性能

IF 4.7 2区工程技术 Q1 MECHANICS

Engineering Fracture Mechanics Pub Date : 2024-10-22 DOI:10.1016/j.engfracmech.2024.110564

Martin Benedikt Klaushofer, Michael Stoschka, Bernd Maier, Florian Grün

{"title":"研究具有微观结构变化的黄铜合金的断裂机械性能","authors":"Martin Benedikt Klaushofer, Michael Stoschka, Bernd Maier, Florian Grün","doi":"10.1016/j.engfracmech.2024.110564","DOIUrl":null,"url":null,"abstract":"<div><div>This study investigates the effect of microstructural variations on the mechanical properties of CuZn35Mn2Al1Fe1-C-GS brass alloy. Specimens taken from positions with different cooling rates in a large cast component exhibit coarse-grained (approximately 5mm) and fine-grained (approximately 1mm) microstructures. Fine-grained samples demonstrate at least a 7% increase in Ultimate Tensile Strength (UTS) and up to a 33% higher long crack threshold <span><math><mrow><mi>Δ</mi><msub><mrow><mi>K</mi></mrow><mrow><mtext>th,lc</mtext></mrow></msub></mrow></math></span>. Hardness measurements are similar between microstructures. The NASGRO model and cyclic R-curve are applied to fit crack propagation data, and fractographic analysis reveals distinct fracture mechanisms. The results indicate that a fine-grained microstructure enhances tensile strength and crack resistance, providing valuable insights for the design and maintenance of heavy machinery components made from cast brass.</div></div>","PeriodicalId":11576,"journal":{"name":"Engineering Fracture Mechanics","volume":"311 ","pages":"Article 110564"},"PeriodicalIF":4.7000,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Investigation of fracture mechanical properties of a brass alloy with microstructural variations\",\"authors\":\"Martin Benedikt Klaushofer, Michael Stoschka, Bernd Maier, Florian Grün\",\"doi\":\"10.1016/j.engfracmech.2024.110564\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>This study investigates the effect of microstructural variations on the mechanical properties of CuZn35Mn2Al1Fe1-C-GS brass alloy. Specimens taken from positions with different cooling rates in a large cast component exhibit coarse-grained (approximately 5mm) and fine-grained (approximately 1mm) microstructures. Fine-grained samples demonstrate at least a 7% increase in Ultimate Tensile Strength (UTS) and up to a 33% higher long crack threshold <span><math><mrow><mi>Δ</mi><msub><mrow><mi>K</mi></mrow><mrow><mtext>th,lc</mtext></mrow></msub></mrow></math></span>. Hardness measurements are similar between microstructures. The NASGRO model and cyclic R-curve are applied to fit crack propagation data, and fractographic analysis reveals distinct fracture mechanisms. The results indicate that a fine-grained microstructure enhances tensile strength and crack resistance, providing valuable insights for the design and maintenance of heavy machinery components made from cast brass.</div></div>\",\"PeriodicalId\":11576,\"journal\":{\"name\":\"Engineering Fracture Mechanics\",\"volume\":\"311 \",\"pages\":\"Article 110564\"},\"PeriodicalIF\":4.7000,\"publicationDate\":\"2024-10-22\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Engineering Fracture Mechanics\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0013794424007276\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MECHANICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Engineering Fracture Mechanics","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0013794424007276","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MECHANICS","Score":null,"Total":0}

引用次数: 0

摘要

本研究探讨了微观结构变化对 CuZn35Mn2Al1Fe1-C-GS 黄铜合金机械性能的影响。从大型铸造部件中不同冷却速度位置取出的试样呈现出粗粒（约 5 毫米）和细粒（约 1 毫米）两种微观结构。细粒样品的极限拉伸强度 (UTS) 至少提高了 7%，长裂纹阈值 ΔKth,lc 最多提高了 33%。不同微结构的硬度测量结果相似。应用 NASGRO 模型和循环 R 曲线来拟合裂纹扩展数据，断口分析揭示了不同的断裂机制。结果表明，细粒度微观结构提高了抗拉强度和抗裂性，为黄铜铸件重型机械部件的设计和维护提供了有价值的见解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

$Investigation of fracture mechanical properties of a brass alloy with microstructural variations$

查看原文本刊更多论文

Investigation of fracture mechanical properties of a brass alloy with microstructural variations

This study investigates the effect of microstructural variations on the mechanical properties of CuZn35Mn2Al1Fe1-C-GS brass alloy. Specimens taken from positions with different cooling rates in a large cast component exhibit coarse-grained (approximately 5 mm) and fine-grained (approximately 1 mm) microstructures. Fine-grained samples demonstrate at least a 7% increase in Ultimate Tensile Strength (UTS) and up to a 33% higher long crack threshold

Δ K_{th,lc}

. Hardness measurements are similar between microstructures. The NASGRO model and cyclic R-curve are applied to fit crack propagation data, and fractographic analysis reveals distinct fracture mechanisms. The results indicate that a fine-grained microstructure enhances tensile strength and crack resistance, providing valuable insights for the design and maintenance of heavy machinery components made from cast brass.

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

Engineering Fracture Mechanics 物理-力学

CiteScore

8.70

自引率

13.00%

发文量

606

审稿时长

74 days

期刊介绍： EFM covers a broad range of topics in fracture mechanics to be of interest and use to both researchers and practitioners. Contributions are welcome which address the fracture behavior of conventional engineering material systems as well as newly emerging material systems. Contributions on developments in the areas of mechanics and materials science strongly related to fracture mechanics are also welcome. Papers on fatigue are welcome if they treat the fatigue process using the methods of fracture mechanics.