Effect of Preheating on Mechanical Properties and Microstructural Behaviour of Friction Stir Welded Copper Joints

2023 14th International Conference on Mechanical and Intelligent Manufacturing Technologies (ICMIMT) Pub Date : 2023-05-26 DOI:10.1109/ICMIMT59138.2023.10199846

Ngazibini Mayila, P. M. Mashinini, Mothibeli Pita

{"title":"Effect of Preheating on Mechanical Properties and Microstructural Behaviour of Friction Stir Welded Copper Joints","authors":"Ngazibini Mayila, P. M. Mashinini, Mothibeli Pita","doi":"10.1109/ICMIMT59138.2023.10199846","DOIUrl":null,"url":null,"abstract":"Copper has a wide range of applications because of its great thermal and electrical conductivity, corrosion and fatigue resistance, and good flexibility. In this paper, the effect of preheating on the mechanical properties of similar friction stir welded plates were investigated. Copper plates were preheated at 450, 550 and 650°C and welded at a rotational speed of 600rpm, a constant transverse speed of 400 mm/min, and a plunge depth of 3,5mm using a cylindrical pin profile. The welded samples were characterized by optical microscope. Tensile and hardness tests were conducted following the ASTM E8-04 and ASTM E92- 82 respectively. The results showed the stir zone consists of fine and equiaxed recrystallized grains with precipitates compared to the parent material. The effect of preheating showed a decrease in the tensile strength of the joint. The average hardness of 650 °C preheated weld joint was reported be the highest as compared to the other joints.","PeriodicalId":286146,"journal":{"name":"2023 14th International Conference on Mechanical and Intelligent Manufacturing Technologies (ICMIMT)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2023-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2023 14th International Conference on Mechanical and Intelligent Manufacturing Technologies (ICMIMT)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICMIMT59138.2023.10199846","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 0

Abstract

Copper has a wide range of applications because of its great thermal and electrical conductivity, corrosion and fatigue resistance, and good flexibility. In this paper, the effect of preheating on the mechanical properties of similar friction stir welded plates were investigated. Copper plates were preheated at 450, 550 and 650°C and welded at a rotational speed of 600rpm, a constant transverse speed of 400 mm/min, and a plunge depth of 3,5mm using a cylindrical pin profile. The welded samples were characterized by optical microscope. Tensile and hardness tests were conducted following the ASTM E8-04 and ASTM E92- 82 respectively. The results showed the stir zone consists of fine and equiaxed recrystallized grains with precipitates compared to the parent material. The effect of preheating showed a decrease in the tensile strength of the joint. The average hardness of 650 °C preheated weld joint was reported be the highest as compared to the other joints.

查看原文本刊更多论文

预热对铜搅拌摩擦焊接接头力学性能和显微组织行为的影响

铜具有良好的导热性和导电性，耐腐蚀和抗疲劳性，以及良好的柔韧性，因此具有广泛的应用。本文研究了预热对类似搅拌摩擦焊板力学性能的影响。铜板分别在450、550和650℃预热，焊接速度为600rpm，横向恒定速度为400mm /min，焊接深度为3.5 mm，采用圆柱销型。用光学显微镜对焊接试样进行了表征。拉伸和硬度试验分别按照ASTM E8-04和ASTM E92- 82进行。结果表明:与母材相比，搅拌区由细小的等轴再结晶晶粒组成，并伴有析出相。预热的作用使接头的抗拉强度降低。650℃预热焊接头的平均硬度最高。

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

2023 14th International Conference on Mechanical and Intelligent Manufacturing Technologies (ICMIMT)

自引率

0.00%

发文量