Analysis of microstructure and mechanical properties of aluminium-copper joints welded by FSW process

5th ModTech International Conference - Modern Technologies in Industrial Engineering

Iordache, M.^1 ; Sicoe, G.^1 ; Iacomi, D.^1 ; Niu, E.^1 ; Ducu, C.^1

University of PiteSti, Manufacturing and Industrial Management Department, Targul din Vale Street No.1, PiteSti, Romania^1

关键词: Copper joints;    Metallographic analysis;    Microstructure and mechanical properties;    Properties and microstructures;    Rotating speed;    Vickers microhardness;    Weld overlay;    Welding parameters;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/227/1/012065/pdf
DOI  :  10.1088/1757-899X/227/1/012065

来源: IOP

【 摘 要 】

The research conducted in this article aimed to check the quality of joining some dissimilar materials Al-Cu by determining the mechanical properties and microstructure analysis. For the experimental measurements there were used tin alloy Al - EN-AW-1050A with a thickness of 2 mm and Cu99 sheet with a thickness of 2 mm, joined by FSW weld overlay. The main welding parameters were: rotating speed of the rotating element 1400 rev/min, speed of the rotating element 50 mm/min. The experimental results were determined on samples specially prepared for metallographic analysis. In order to prepare samples for their characterization, there was designed and built a device that allowed simultaneous positioning and fixing for grinding. The characteristics analyzed in the joint welded samples were mictrostructure, microhardness and residual stresses. The techniques used to determine these characteristics were optical microscopy, electron microscopy with fluorescence radioactive elemental analysis (EDS), Vickers microhardness line - HV0.3 and X-ray diffractometry.