增材制造CuCrZr中构造几何和孔隙率的影响

IF 1.5 4区 材料科学 Q3 ENGINEERING, MECHANICAL Journal of Engineering Materials and Technology-transactions of The Asme Pub Date : 2023-11-07 DOI:10.1115/1.4064003
Anup Kulkarni, Vivek C Peddiraju, Subhradeep Chatterjee, Dheepa Srinivasan
{"title":"增材制造CuCrZr中构造几何和孔隙率的影响","authors":"Anup Kulkarni, Vivek C Peddiraju, Subhradeep Chatterjee, Dheepa Srinivasan","doi":"10.1115/1.4064003","DOIUrl":null,"url":null,"abstract":"Abstract The current work presents an understanding of microstructure and mechanical properties as a function of build geometry and build orientation in Cu-Cr-Zr via the laser powder bed fusion (LPBF) technique. Porosity, microstructure, and mechanical properties have been compared in the as-printed (AP) and heat treated (HT) LPBF Cu-Cr-Zr, between cylindrical and cube geometries, along the longitudinal (L) and transverse (T) build orientations. Varying porosity levels were observed that yielded parts with 96-97% relative density in the AP condition. The AP microstructure demonstrated a hierarchical microstructure, comprising of grains (2.5-100 μm) with a cellular substructure (400-850 nm) and intra-cellular nanoscale (20-60 nm) precipitates enriched in Cu and Zr. Unlike most materials in the AP condition, crystallographic texture was found to be absent; however, very distinct river like patterns highlighted a novel feature of the LPBF Cu-Cr-Zr. Upon solutionizing and aging, Cr precipitates were seen heterogeneously nucleating along cell boundaries (0.5-1.3 μm), causing up to 45% enhancement in the strength and a 4-5% lower ductility. The yield strength along the transverse orientation was 10-16% higher than that of longitudinal orientation, in both the AP and HT conditions. Fracture surface of the tensile samples exhibited micro-voids and cleavage facets and unmelted particles. In spite of the porosity, the overall mechanical properties matched well with those obtained in nearly dense (>99%) samples and the mechanical property debit was less than 10%.","PeriodicalId":15700,"journal":{"name":"Journal of Engineering Materials and Technology-transactions of The Asme","volume":"51 4","pages":"0"},"PeriodicalIF":1.5000,"publicationDate":"2023-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effect of Build Geometry and Porosity in Additively Manufactured CuCrZr\",\"authors\":\"Anup Kulkarni, Vivek C Peddiraju, Subhradeep Chatterjee, Dheepa Srinivasan\",\"doi\":\"10.1115/1.4064003\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Abstract The current work presents an understanding of microstructure and mechanical properties as a function of build geometry and build orientation in Cu-Cr-Zr via the laser powder bed fusion (LPBF) technique. Porosity, microstructure, and mechanical properties have been compared in the as-printed (AP) and heat treated (HT) LPBF Cu-Cr-Zr, between cylindrical and cube geometries, along the longitudinal (L) and transverse (T) build orientations. Varying porosity levels were observed that yielded parts with 96-97% relative density in the AP condition. The AP microstructure demonstrated a hierarchical microstructure, comprising of grains (2.5-100 μm) with a cellular substructure (400-850 nm) and intra-cellular nanoscale (20-60 nm) precipitates enriched in Cu and Zr. Unlike most materials in the AP condition, crystallographic texture was found to be absent; however, very distinct river like patterns highlighted a novel feature of the LPBF Cu-Cr-Zr. Upon solutionizing and aging, Cr precipitates were seen heterogeneously nucleating along cell boundaries (0.5-1.3 μm), causing up to 45% enhancement in the strength and a 4-5% lower ductility. The yield strength along the transverse orientation was 10-16% higher than that of longitudinal orientation, in both the AP and HT conditions. Fracture surface of the tensile samples exhibited micro-voids and cleavage facets and unmelted particles. In spite of the porosity, the overall mechanical properties matched well with those obtained in nearly dense (>99%) samples and the mechanical property debit was less than 10%.\",\"PeriodicalId\":15700,\"journal\":{\"name\":\"Journal of Engineering Materials and Technology-transactions of The Asme\",\"volume\":\"51 4\",\"pages\":\"0\"},\"PeriodicalIF\":1.5000,\"publicationDate\":\"2023-11-07\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Engineering Materials and Technology-transactions of The Asme\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1115/1.4064003\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"ENGINEERING, MECHANICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Engineering Materials and Technology-transactions of The Asme","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1115/1.4064003","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, MECHANICAL","Score":null,"Total":0}
引用次数: 0

摘要

目前的工作是通过激光粉末床熔融(LPBF)技术了解Cu-Cr-Zr的微观结构和力学性能作为构建几何形状和构建方向的函数。在纵向(L)和横向(T)构建方向上,比较了打印(AP)和热处理(HT) LPBF Cu-Cr-Zr的孔隙率、微观结构和力学性能。在AP条件下,观察到不同孔隙率的零件相对密度为96-97%。AP微观结构呈层次结构,由2.5 ~ 100 μm的细胞亚结构(400 ~ 850 nm)和细胞内纳米(20 ~ 60 nm)富集Cu和Zr的析出相组成。与AP条件下的大多数材料不同,晶体织构缺失;然而,非常独特的河流模式突出了LPBF Cu-Cr-Zr的一个新特征。在固溶和时效过程中,Cr析出物沿晶界(0.5 ~ 1.3 μm)呈非均匀形核,导致强度提高45%,塑性降低4 ~ 5%。在AP和HT条件下,沿横向的屈服强度比纵向的高10-16%。拉伸试样断口表面出现微孔洞、解理面和未熔化颗粒。尽管存在孔隙度,但总体力学性能与近致密(>99%)样品的力学性能匹配良好,力学性能偏差小于10%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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 Build Geometry and Porosity in Additively Manufactured CuCrZr
Abstract The current work presents an understanding of microstructure and mechanical properties as a function of build geometry and build orientation in Cu-Cr-Zr via the laser powder bed fusion (LPBF) technique. Porosity, microstructure, and mechanical properties have been compared in the as-printed (AP) and heat treated (HT) LPBF Cu-Cr-Zr, between cylindrical and cube geometries, along the longitudinal (L) and transverse (T) build orientations. Varying porosity levels were observed that yielded parts with 96-97% relative density in the AP condition. The AP microstructure demonstrated a hierarchical microstructure, comprising of grains (2.5-100 μm) with a cellular substructure (400-850 nm) and intra-cellular nanoscale (20-60 nm) precipitates enriched in Cu and Zr. Unlike most materials in the AP condition, crystallographic texture was found to be absent; however, very distinct river like patterns highlighted a novel feature of the LPBF Cu-Cr-Zr. Upon solutionizing and aging, Cr precipitates were seen heterogeneously nucleating along cell boundaries (0.5-1.3 μm), causing up to 45% enhancement in the strength and a 4-5% lower ductility. The yield strength along the transverse orientation was 10-16% higher than that of longitudinal orientation, in both the AP and HT conditions. Fracture surface of the tensile samples exhibited micro-voids and cleavage facets and unmelted particles. In spite of the porosity, the overall mechanical properties matched well with those obtained in nearly dense (>99%) samples and the mechanical property debit was less than 10%.
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
CiteScore
3.00
自引率
0.00%
发文量
30
审稿时长
4.5 months
期刊介绍: Multiscale characterization, modeling, and experiments; High-temperature creep, fatigue, and fracture; Elastic-plastic behavior; Environmental effects on material response, constitutive relations, materials processing, and microstructure mechanical property relationships
期刊最新文献
Effect of Build Geometry and Porosity in Additively Manufactured CuCrZr Influence of Multiple Modifications on the Fatigue Behavior of Bitumen and Asphalt Mixtures High Temperature Tensile and Compressive Behaviors of Nanostructured Polycrystalline AlCoCrFeNi High Entropy Alloy: A Molecular Dynamics Study Simulation of Pitting Corrosion Under Stress Based on Cellular Automata and Finite Element Method Corrosion Behavior of 20G Steel in Saline (Na2SO4) Circumstances at High Temperature/Pressure
×
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