ItemArticle

Microstructural evolution and damping response in ARB-processed ZK60 alloy

Title
Microstructural evolution and damping response in ARB-processed ZK60 alloy
Creator
Keshavamurthy, R.; Arunachalam, Krishna Prakash; Kumar, M. Anil; Chiranjeevi, Poondla; Reddy, R. Sudhakar; Chekuri, Rama Badri Raju; Praveenkumar, Seepana; Satyanarayana, M.V.N.V.
Description
This study investigates the effect of microstructural evolution on the damping behaviour of ZK60 magnesium alloy processed via Accumulative Roll Bonding (ARB). ARB was employed at 300C for up to four cycles, significantly refining the grain structure and altering dislocation and precipitation behaviour. Comprehensive microstructural analysis revealed the formation of fine equiaxed grains (?6.7 m), dissolution of coarse precipitates, and increased dislocation density. TEM and Selected Area Diffraction (SAD) patterns confirmed dynamic recrystallisation and uniform grain orientation, while XRD patterns exhibited peak broadening and intensity changes, indicating crystallite refinement and texture evolution. Damping results showed substantial improvements in the ARB-processed alloy, particularly at low-to-mid frequencies, with up to 21% higher damping capacity than the base alloy. This enhancement is attributed to increased grain boundary sliding, dislocation interactions, and refined precipitatematrix interfaces. Both alloys exhibited similar damping responses at higher frequencies, suggesting saturation of energy dissipation mechanisms. 2025 Canadian Institute of Mining, Metallurgy and Petroleum.
Source
Canadian Metallurgical Quarterly;
Date
01-01-2025
Publisher
Taylor and Francis Ltd.
Subject
Accumulative roll bonding; damping behaviour; grain refinement; microstructure evolution; precipitation phenomenon; ZK60 alloy
Coverage
Keshavamurthy R., Department of Mechanical and Automobile Engineering, CHRIST University, Bengaluru, India; Arunachalam K.P., Departamento de Ciencias de la Construcci, Facultad de Ciencias de la Construcci Ordenamiento Territorial, Universidad Tecnolica Metropolitana, Santiago, Chile; Kumar M.A., Sagi Rama Krishnam Raju Engineering College, Bhimavaram, India; Chiranjeevi P., Sreenidhi Institute of Science and Technology, Hyderabad, India; Reddy R.S., Aditya University, Surampalem, India; Chekuri R.B.R., Sagi Rama Krishnam Raju Engineering College, Bhimavaram, India; Praveenkumar S., Department of Nuclear and Renewable Energy Sources, Ural Federal University, Yekaterinburg, Russian Federation; Satyanarayana M.V.N.V., Anil Neerukonda Institute of Technology and Sciences, Visakhapatnam, India
Rights
Restricted Access; Hardcopy may be available in the library
Relation
ISSN: 84433; CODEN: CAMQA
Format
online
Language
English
Type
Article

Citation

Keshavamurthy, R.; Arunachalam, Krishna Prakash; Kumar, M. Anil; Chiranjeevi, Poondla; Reddy, R. Sudhakar; Chekuri, Rama Badri Raju; Praveenkumar, Seepana; Satyanarayana, M.V.N.V., “Microstructural evolution and damping response in ARB-processed ZK60 alloy,” CHRIST (Deemed To Be University) Institutional Repository, accessed June 18, 2026, https://archives.christuniversity.in/items/show/22627.

Output Formats