Ultrasonic-driven grain refinement in high-frequency pulsed welding of Inconel 690 alloy: Interplay between ultrasonic and molten pool dynamic

IF 6.1 1区工程技术 Q1 ENGINEERING, MANUFACTURING

Journal of Manufacturing Processes Pub Date : 2025-05-02 DOI:10.1016/j.jmapro.2025.04.092

Yunhao Xia , Bolun Dong , Xiaoyu Cai , Qihao Chen , Yangyang Fan , Sanbao Lin

{"title":"Ultrasonic-driven grain refinement in high-frequency pulsed welding of Inconel 690 alloy: Interplay between ultrasonic and molten pool dynamic","authors":"Yunhao Xia , Bolun Dong , Xiaoyu Cai , Qihao Chen , Yangyang Fan , Sanbao Lin","doi":"10.1016/j.jmapro.2025.04.092","DOIUrl":null,"url":null,"abstract":"<div><div>This study investigates the influence of pulse frequency on high-frequency pulsed gas tungsten arc welding (HFP-GTAW) of Inconel 690 alloy. The results reveal that increasing pulse frequency significantly modifies arc morphology through electromagnetic constriction and thermal delay effects, leading to concentrated heat input. At 20 kHz, pronounced grain refinement occurs, marked by reduced columnar grain proportion to 66.15 % and improved grain misorientation uniformity, driven by ultrasonic cavitation and acoustic streaming effects. However, as the pulse frequency exceeds 20 kHz, ultrasonic effects weaken and heat source concentration dominates, resulting in coarser grain structures and reduced orientation uniformity. The theoretical analysis explores molten pool resonance further highlights the interplay relationship between frequency-selective of arc-induced ultrasonic and molten pool dynamics (thermal gradient) on grain growth. This study provides novel insights into the ultrasonic effect in HFP-GTAW, offering a foundation for optimizing welding processes to achieve superior microstructure in nickel-based alloys.</div></div>","PeriodicalId":16148,"journal":{"name":"Journal of Manufacturing Processes","volume":"146 ","pages":"Pages 172-190"},"PeriodicalIF":6.1000,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Manufacturing Processes","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1526612525005183","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, MANUFACTURING","Score":null,"Total":0}

引用次数: 0

Abstract

This study investigates the influence of pulse frequency on high-frequency pulsed gas tungsten arc welding (HFP-GTAW) of Inconel 690 alloy. The results reveal that increasing pulse frequency significantly modifies arc morphology through electromagnetic constriction and thermal delay effects, leading to concentrated heat input. At 20 kHz, pronounced grain refinement occurs, marked by reduced columnar grain proportion to 66.15 % and improved grain misorientation uniformity, driven by ultrasonic cavitation and acoustic streaming effects. However, as the pulse frequency exceeds 20 kHz, ultrasonic effects weaken and heat source concentration dominates, resulting in coarser grain structures and reduced orientation uniformity. The theoretical analysis explores molten pool resonance further highlights the interplay relationship between frequency-selective of arc-induced ultrasonic and molten pool dynamics (thermal gradient) on grain growth. This study provides novel insights into the ultrasonic effect in HFP-GTAW, offering a foundation for optimizing welding processes to achieve superior microstructure in nickel-based alloys.

查看原文本刊更多论文

超声驱动下Inconel 690合金高频脉冲焊接晶粒细化：超声与熔池动态的相互作用

研究了脉冲频率对Inconel 690合金高频脉冲气体钨极电弧焊的影响。结果表明，增加脉冲频率会通过电磁收缩效应和热延迟效应显著改变电弧形态，导致热输入集中。在20 kHz时，在超声空化和声流作用下，晶粒细化明显，柱状晶粒比例降至66.15%，晶粒取向不均匀性改善。但当脉冲频率超过20 kHz时，超声效应减弱，热源集中起主导作用，导致晶粒结构粗糙，取向均匀性降低。通过对熔池共振的理论分析，进一步强调了电弧超声的频率选择与熔池动力学（热梯度）对晶粒生长的相互作用关系。本研究为超声波在HFP-GTAW中的作用提供了新的见解，为优化焊接工艺以获得优异的镍基合金组织提供了基础。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Journal of Manufacturing Processes ENGINEERING, MANUFACTURING-

CiteScore

10.20

自引率

11.30%

发文量

833

审稿时长

50 days

期刊介绍： The aim of the Journal of Manufacturing Processes (JMP) is to exchange current and future directions of manufacturing processes research, development and implementation, and to publish archival scholarly literature with a view to advancing state-of-the-art manufacturing processes and encouraging innovation for developing new and efficient processes. The journal will also publish from other research communities for rapid communication of innovative new concepts. Special-topic issues on emerging technologies and invited papers will also be published.