Experimental study of mechanical properties of friction welded AISI 1021 steels

Abstract

Friction welding is widely used as a mass production method in various industries. In the present study, an experimental setup was designed in order to achieve friction welding of plastically deformed AISI 1021 steels. In this study, low alloy steel (AISI 1021) was welded under different welding parameters and afterwards the mechanical properties such as tensile strength, impact strength and hardness were experimentally determined. On the basis of the results obtained from the experimentation, the graphs were plotted. It is the strength of welded joints, which is fundamental property to the service reliability of the weldments and hence present work was undertaken to study the influence of axial pressure and rotational speed in friction welded joints. Axial pressure and rotational speed are the two major parameters which can influence the strength and hence the mechanical properties of the friction welded joints. Thus the axial pressure and rotational speed were taken as welding parameters, which reflect the mechanical properties.

Evaluation of tensile strength and fracture behavior of friction welded dissimilar steels under different rotational speeds and axial pressures

“…The tensile test results are in good agreement with literature (Handa & Chawla 2013a). Weld strength of tensile tested friction welded specimens (in percentage) compared with unwelded AISI 1021 parent metal has been reported in table 4.…”

“…A continuous drive (Reddy & Rao 2009) lathe machine was used for the experimentation. The modified lathe machine was used for the friction welding of the specimens; axial pressures were monitored from the load cell fitted on the machine (Handa & Chawla 2013a). Test samples were fabricated on the friction welding set-up for the experimentation, before welding, the contacting surfaces of the specimens were faced on the lathe machine and then cleaned using Acetone (Sathiya et al 2005).…”

“…Joining of the metals is one of the most essential needs of the industry (Handa & Chawla 2013a). The joining has increasingly been used in the materials technology because of the materials having different mechanical properties needs to be efficiently and effectively joined to increase their performance (Uzkut et al 2011).…”

Rotary Friction Welding of Dissimilar Materials

“…In microstructure its shows that at higher stress rates new sub grains are more nucleated resulting in a finer sub grain shape inside the deformed material. Handa et al [17] had conducted the experimental study on weld joints of AISI 1021 steels fabricated with FW process to analyze the mechanical properties of weld joints. The main variables considered were Spindle Speed (800, 1000, 1250 RPM) and range of axial stress (60, 75, 90, 105, 120, 135 Megapascal).…”

Diseño y construcción de un equipo de soldadura por fricción con asistencia láser para la unión de ejes de acero AISI 1045 y aluminio 2017-T4

“…Los resultados mostraron una resistencia a la tracción de 250 MPa con fallas en la zona plastificada debido a la existencia de una interfaz con compuesto intermetálico Al-Fe, con un espesor de 250 nm relacionado con las fases Fe 2 Al 5 que se forman a temperaturas superiores a 1200 °C [9]. Handa y Chawla [10] adaptaron un torno convencional con un sistema de presión y frenado para crear una máquina de RFW. Los autores encontraron que la resistencia máxima a la tracción y la resistencia al impacto son aceptables a una velocidad de rotación de 1250 rpm con una presión axial de 120 MPa, para juntas soldadas de acero AISI 1021 de 20 mm de diámetro.…”