IN718/FGH96异种高温合金直线摩擦焊件的力学性能和显微组织

Mingxiang Wang, Peihao Geng, Hong Ma, G. Qin
{"title":"IN718/FGH96异种高温合金直线摩擦焊件的力学性能和显微组织","authors":"Mingxiang Wang, Peihao Geng, Hong Ma, G. Qin","doi":"10.1115/msec2022-85288","DOIUrl":null,"url":null,"abstract":"Wrought superalloy IN718 and powder metallurgy (P/M) FGH96 were joined by linear friction welding (LFW). The variation of microstructure and mechanical properties at different welding parameters has been investigated. Macrostructural examination of the double flash morphology indicated a conservative shortening length of 2.57 mm that was recommended to extrude out the original surface contaminants into the flash. Weld zone of the joint was featured with weld interface zone (WIZ) and thermo-mechanically affected zone (TMAZ), where deformed morphology tended to be more narrow with increasing applied pressure. The increasing oscillatory frequency or decreasing applied pressure promoted the refinement of dynamically recrystallised γ matrix grain. The analysis of electron backscatter diffraction (EBSD) mapping of the weldments showed that dynamic recrystallisation (DRX) occurred in the weld zone of dissimilar nickel-based superalloy. Continuous dynamic recrystallisation (CDRX) became the predominant behaviour, accompanied by inconspicuous discontinuous dynamic recrystallisation (DDRX). The scanning electron microscope (SEM) shows that dissolution of the strengthening phase occurred from WIZ to TMAZ, strongly influencing hardness distribution across the interface. Sound joints with a higher interface strength than the base metals of IN718 were obtained.","PeriodicalId":23676,"journal":{"name":"Volume 2: Manufacturing Processes; Manufacturing Systems; Nano/Micro/Meso Manufacturing; Quality and Reliability","volume":"7 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2022-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Mechanical Property and Microstructure of IN718/FGH96 Dissimilar Superalloy Linear Friction Weldment\",\"authors\":\"Mingxiang Wang, Peihao Geng, Hong Ma, G. Qin\",\"doi\":\"10.1115/msec2022-85288\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Wrought superalloy IN718 and powder metallurgy (P/M) FGH96 were joined by linear friction welding (LFW). The variation of microstructure and mechanical properties at different welding parameters has been investigated. Macrostructural examination of the double flash morphology indicated a conservative shortening length of 2.57 mm that was recommended to extrude out the original surface contaminants into the flash. Weld zone of the joint was featured with weld interface zone (WIZ) and thermo-mechanically affected zone (TMAZ), where deformed morphology tended to be more narrow with increasing applied pressure. The increasing oscillatory frequency or decreasing applied pressure promoted the refinement of dynamically recrystallised γ matrix grain. The analysis of electron backscatter diffraction (EBSD) mapping of the weldments showed that dynamic recrystallisation (DRX) occurred in the weld zone of dissimilar nickel-based superalloy. Continuous dynamic recrystallisation (CDRX) became the predominant behaviour, accompanied by inconspicuous discontinuous dynamic recrystallisation (DDRX). The scanning electron microscope (SEM) shows that dissolution of the strengthening phase occurred from WIZ to TMAZ, strongly influencing hardness distribution across the interface. Sound joints with a higher interface strength than the base metals of IN718 were obtained.\",\"PeriodicalId\":23676,\"journal\":{\"name\":\"Volume 2: Manufacturing Processes; Manufacturing Systems; Nano/Micro/Meso Manufacturing; Quality and Reliability\",\"volume\":\"7 1\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2022-06-27\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Volume 2: Manufacturing Processes; Manufacturing Systems; Nano/Micro/Meso Manufacturing; Quality and Reliability\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1115/msec2022-85288\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Volume 2: Manufacturing Processes; Manufacturing Systems; Nano/Micro/Meso Manufacturing; Quality and Reliability","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1115/msec2022-85288","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0

摘要

采用直线摩擦焊接方法将变形高温合金IN718与粉末冶金(P/M) FGH96焊接在一起。研究了不同焊接参数下合金组织和力学性能的变化。双闪光形态的宏观结构检查表明,保守缩短长度为2.57 mm,建议将原始表面污染物挤出到闪光中。接头焊缝区以焊缝界面区(WIZ)和热机械影响区(TMAZ)为特征,随着施加压力的增加,焊缝界面区变形形貌趋于狭窄。振荡频率的增加或施加压力的减小促进了动态再结晶γ基体晶粒的细化。焊接件的电子背散射衍射(EBSD)分析表明,不同镍基高温合金的焊接区发生了动态再结晶(DRX)。连续动态再结晶(CDRX)成为主要行为,同时伴有不明显的不连续动态再结晶(DDRX)。扫描电镜(SEM)分析表明,强化相在WIZ到TMAZ之间发生溶解,对界面硬度分布有较大影响。获得了界面强度高于IN718母材的良好接头。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Mechanical Property and Microstructure of IN718/FGH96 Dissimilar Superalloy Linear Friction Weldment
Wrought superalloy IN718 and powder metallurgy (P/M) FGH96 were joined by linear friction welding (LFW). The variation of microstructure and mechanical properties at different welding parameters has been investigated. Macrostructural examination of the double flash morphology indicated a conservative shortening length of 2.57 mm that was recommended to extrude out the original surface contaminants into the flash. Weld zone of the joint was featured with weld interface zone (WIZ) and thermo-mechanically affected zone (TMAZ), where deformed morphology tended to be more narrow with increasing applied pressure. The increasing oscillatory frequency or decreasing applied pressure promoted the refinement of dynamically recrystallised γ matrix grain. The analysis of electron backscatter diffraction (EBSD) mapping of the weldments showed that dynamic recrystallisation (DRX) occurred in the weld zone of dissimilar nickel-based superalloy. Continuous dynamic recrystallisation (CDRX) became the predominant behaviour, accompanied by inconspicuous discontinuous dynamic recrystallisation (DDRX). The scanning electron microscope (SEM) shows that dissolution of the strengthening phase occurred from WIZ to TMAZ, strongly influencing hardness distribution across the interface. Sound joints with a higher interface strength than the base metals of IN718 were obtained.
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
自引率
0.00%
发文量
0
×
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
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
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 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信