Analysis of the Influence Of Friction Stir Welding on the Microstructure and Mechanical Properties of Alloy UNS-C27200 (CU-ZN)

Rosa, René Hortelano Santa; Almeida, I.; Varasquim, Francisco Mateus Faria de Almeida; C., E.; Couto, Antônio Augusto; Santos, Vinicius Torres dos; Silva, Márcio R.; Nakamoto, Francisco Yastami; Santos, Givanildo Alves dos

doi:10.1590/1980-5373-mr-2022-0581

Cited by 1 publication

(1 citation statement)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The points measured for the microhardness of the joint were collected in four different lines of the sample, as shown in Figure 8, where "Line 1" and "Line 2" are the lines of the lower plate and "Line 3" and "Line 4" are the lines of the upper plate, method adopted by Rosa et al 32 to measure microhardness in overlapping joints making it possible to investigate the direct influence on microhardness promoted by the heat generated by the shoulder and pin on the upper and lower plates. For this test, a Buehler microhardness tester was used on the Vickers HV 0.1 kgf scale and followed the ASTM E384 33 standard for Vickers hardness.…”

Section: Microhardness Testmentioning

confidence: 99%

Effect of Friction Stir Welding on Microstructure and Mechanical Properties of uns C19400 Alloy Plates

Martins,

Varasquim,

Cruz Junior

et al. 2023

Mat. Res.

View full text Add to dashboard Cite

The welding of metallic materials by the Friction Stir Welding (FSW) method is a very attractive process for preserving their characteristics, especially for copper and its alloys that require high heat input and present many distortions by traditional methods. However, it is a great challenge to produce welds free of defects and maintain or improve their mechanical properties. In the current literature data on FSW parameters for copper and its alloys are scarce. In this study, tests were performed with a combination of four tool rotations (750, 850, 950, 1050 rev.min -1 ) and two welding speeds (20 and 60 mm.min -1 ), maintaining the tool inclination angle in 3° and waiting time of 5 seconds. The objective of this work is to analyze the microstructure and mechanical performance of lap joints of the UNS C19400 alloy joined by FSW. The process temperature was monitored to trace the heating profile of the process, in addition to microhardness and shear strength tests, in addition to optical microscopy for analysis. The joints welded by the parameters Ω 950 rev.mm -1 𝛖 20mm.min -1 obtained a mechanical performance of 73% compared to the characteristics of the base metal and despite the appearance of volumetric defects at the microstructural level, the metallurgical transformations of recovery and recrystallization of the grains observed in the microstructure played a key role in the result.

show abstract

Section: Microhardness Testmentioning

confidence: 99%