Friction Stir Welding of Monel 400: Microstructure, Substructure, and Mechanical Properties

مهندسی متالورژی و مواد

Article 5, Volume 31, Issue 2 - Serial Number 22, September 2020, Pages 45-56   

Document Type: Original Articles

DOI: 10.22067/ma.v31i2.68236

Author

Akbar Heidarzadeh^*

Azarbaijan Shahid Madani University

Abstract

In this study, the microstructure, substructure and hardness of the friction stir welded Monel 400 were investigated and compared with those of the base metal. For this purpose, the Monel 400 plates were friction stir welded at a tool rotational speed of 400 rpm, and a tool traverse speed of 100 mm/min. For characterizing the microstructure and grain boundaries in base metal and stir zone, the electron backscattered diffraction was utilized. The transmission electron microscopy was used for studying the substructures. In addition, microhardness test was conducted to hardness measurement. The results showed that the grain refinement, increasing in dislocation density and Taylor factor were the main reasons of the higher hardness of the stir zone.

Keywords

Monel; Friction Stir Welding; Microstructure

Supplementary Files

5-hydarzade-Revised.pdf

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