{"title":"用于燃气轮机部件的镍铬超合金 80 A 激光焊接接头的多目标优化和断裂分析","authors":"Suman Kumar Saurabh, Prabha Chand, Umacharan Singh Yadav","doi":"10.1007/s12206-024-0822-5","DOIUrl":null,"url":null,"abstract":"<p>This article addresses butt joining of 1.2 mm thick Ni-Cr superalloy 80 A sheets using a 3.5 kW CO<sub>2</sub> laser beam welding (LBW) process, which is critical for gas turbine components, nuclear tube supports and automotive valves in high temperature applications. LBW, chosen for its low heat input and minimal heat-affected zones, was optimized using Taguchi-based gray relationship analysis. The L9 orthogonal array experiment identified the optimal parameter sets for welding speed, laser power, focal length, and shielding gas flow rate that affect tensile strength, microhardness, penetration depth and weld bead. The results were validated using ANOVA analysis, fractography, hardness testing, micrographs and tensile tests. Microstructural variations in fusion and heat affected zones. The optimized parameters resulted in a tensile strength of 817 MPa and a microhardness of 292 HV, demonstrating improved weld quality.</p>","PeriodicalId":16235,"journal":{"name":"Journal of Mechanical Science and Technology","volume":"1 1","pages":""},"PeriodicalIF":1.5000,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Multi-objective optimization and fracture analysis of laser weld joints of Ni-Cr superalloy 80 A for gas turbine components\",\"authors\":\"Suman Kumar Saurabh, Prabha Chand, Umacharan Singh Yadav\",\"doi\":\"10.1007/s12206-024-0822-5\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>This article addresses butt joining of 1.2 mm thick Ni-Cr superalloy 80 A sheets using a 3.5 kW CO<sub>2</sub> laser beam welding (LBW) process, which is critical for gas turbine components, nuclear tube supports and automotive valves in high temperature applications. LBW, chosen for its low heat input and minimal heat-affected zones, was optimized using Taguchi-based gray relationship analysis. The L9 orthogonal array experiment identified the optimal parameter sets for welding speed, laser power, focal length, and shielding gas flow rate that affect tensile strength, microhardness, penetration depth and weld bead. The results were validated using ANOVA analysis, fractography, hardness testing, micrographs and tensile tests. Microstructural variations in fusion and heat affected zones. The optimized parameters resulted in a tensile strength of 817 MPa and a microhardness of 292 HV, demonstrating improved weld quality.</p>\",\"PeriodicalId\":16235,\"journal\":{\"name\":\"Journal of Mechanical Science and Technology\",\"volume\":\"1 1\",\"pages\":\"\"},\"PeriodicalIF\":1.5000,\"publicationDate\":\"2024-09-04\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Mechanical Science and Technology\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://doi.org/10.1007/s12206-024-0822-5\",\"RegionNum\":4,\"RegionCategory\":\"工程技术\",\"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 Mechanical Science and Technology","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1007/s12206-024-0822-5","RegionNum":4,"RegionCategory":"工程技术","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
本文探讨了使用 3.5 kW CO2 激光束焊接 (LBW) 工艺对接 1.2 mm 厚的镍铬超合金 80 A 板材的问题,这对于高温应用中的燃气轮机部件、核电管支架和汽车阀门至关重要。LBW 因其输入热量低、热影响区最小而被选中,采用基于田口灰色关系分析的方法对其进行了优化。L9 正交阵列实验确定了影响拉伸强度、显微硬度、熔深和焊缝的焊接速度、激光功率、焦距和保护气体流速的最佳参数集。利用方差分析、断口分析、硬度测试、显微照片和拉伸试验对结果进行了验证。熔合区和热影响区的微观结构变化。优化后的参数使拉伸强度达到 817 兆帕,显微硬度达到 292 HV,表明焊接质量得到了改善。
Multi-objective optimization and fracture analysis of laser weld joints of Ni-Cr superalloy 80 A for gas turbine components
This article addresses butt joining of 1.2 mm thick Ni-Cr superalloy 80 A sheets using a 3.5 kW CO2 laser beam welding (LBW) process, which is critical for gas turbine components, nuclear tube supports and automotive valves in high temperature applications. LBW, chosen for its low heat input and minimal heat-affected zones, was optimized using Taguchi-based gray relationship analysis. The L9 orthogonal array experiment identified the optimal parameter sets for welding speed, laser power, focal length, and shielding gas flow rate that affect tensile strength, microhardness, penetration depth and weld bead. The results were validated using ANOVA analysis, fractography, hardness testing, micrographs and tensile tests. Microstructural variations in fusion and heat affected zones. The optimized parameters resulted in a tensile strength of 817 MPa and a microhardness of 292 HV, demonstrating improved weld quality.
期刊介绍:
The aim of the Journal of Mechanical Science and Technology is to provide an international forum for the publication and dissemination of original work that contributes to the understanding of the main and related disciplines of mechanical engineering, either empirical or theoretical. The Journal covers the whole spectrum of mechanical engineering, which includes, but is not limited to, Materials and Design Engineering, Production Engineering and Fusion Technology, Dynamics, Vibration and Control, Thermal Engineering and Fluids Engineering.
Manuscripts may fall into several categories including full articles, solicited reviews or commentary, and unsolicited reviews or commentary related to the core of mechanical engineering.