ANALYSIS AND CHARACTERIZATION OF FORMING BEHAVIOR ON DISSIMILAR JOINTS OF AA5052-O TO AA6061-T6 USING UNDERWATER FRICTION STIR WELDING-Reference-Cited by-同舟云学术

ANALYSIS AND CHARACTERIZATION OF FORMING BEHAVIOR ON DISSIMILAR JOINTS OF AA5052-O TO AA6061-T6 USING UNDERWATER FRICTION STIR WELDING

Published:2019-07-18 Issue:03 Volume:27 Page:1950121
ISSN:0218-625X
Container-title:Surface Review and Letters
language:en
Short-container-title:Surf. Rev. Lett.

Author:

TEJONADHA BABU K.¹,MUTHUKUMARAN S.¹,SATHIYA NARAYANAN C.²,BHARAT KUMAR C. H.¹

Affiliation:

1. Department of Metallurgical and Materials Engineering, National Institute of Technology, Tiruchirappalli 620 015, India

2. Department of Production Engineering, National Institute of Technology, Tiruchirappalli 620 015, India

Abstract

The effects of underwater friction stir welding (UFSW) on mechanical properties, strain hardening behavior, and formability of dissimilar materials of AA5052-O and AA6061-T6 welded joints were investigated. The mechanical properties of the UFSW joints exhibited higher strength and higher joint efficiency than the conventional friction stir welded joints (CFSW). The maximum joint efficiency of 73% has been attained for UFSW joints, which is due to the effect of welding atmosphere. The hardness of the stir zone (SZ) and heat affected zone (HAZ) are also obtained higher for the UFSW joints. Moreover, the hardening capacity, strain hardening exponent and formability of the UFSW joints were greatly improved over the CFSW joints. The improvement in mechanical properties of the UFSW joints is mainly due to faster cooling rate during welding. The microstructural characteristics revealed the formation of fine grains in the UFSW joints compared to the CFSW joints.

Publisher

World Scientific Pub Co Pte Lt

Subject

Materials Chemistry,Surfaces, Coatings and Films,Surfaces and Interfaces,Condensed Matter Physics

Link

https://www.worldscientific.com/doi/pdf/10.1142/S0218625X1950121X

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