Effect of ultrasonic treatment on grain refinement and mechanical properties of Al-2Mg alloy

ABSTRACT

In the present study, to achieve grain refinement and enhance the mechanical properties of Al-2Mg alloy, ultrasonic treatment (UT) has been applied to the melt. The effects of this treatment on the microstructure, porosity alleviation, and mechanical properties of Al-2Mg have been thoroughly investigated. A microstructure study of the Al-2Mg UT alloy has revealed a noteworthy enhancement in grain refinement, resulting in a 3-to-4-fold reduction in grain size as compared to a non-UT Al-2Mg alloy. After UT, the yield tensile strength, the ultimate tensile strength, and the microhardness of Al-2Mg alloy are increased by 21%, 34%, and 36% respectively, with a large improvement of 143% in the ductility.

KEYWORDS:

• Al-Mg alloy
• ultrasonic treatment
• grain refinement
• microstructure
• mechanical properties

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

The author would like to thank the Science and Engineering Research Board, Government of India for financial support [grant number ECR/ 2017/001010]

Notes on contributors

Ashish Thakur

Ashish Thakur: The author is currently pursuing his PhD in the field of synthesis and characterization of in-situ AMC’s.

Ramendra Kumar Gupta

Ramendra Kumar Gupta: The author has done his PhD in the field of Aluminum matrix nanocomposites. He is currently working as a Research scientist in the firm “Proto9 materials, Mumbai, India”.

V. Udhayabanu

V. Udhayabanu: The author has worked in the field of nanostructured materials, MMC’s, and intermetallics.

D. R. Peshwe

D.R. Peshwe: The author has worked in the field of composite material, heat treatment, polymers, and nanotechnology. He is currently as a Professor in VNIT, Nagpur, MH, India.

Y. Y. Mahajan

Y.Y. Mahajan: The author has worked in the field of composite material. He completed many research projects and given consultancy services/organizations. He is currently working as an Assistant Professor in VNIT, Nagpur, MH, India.