Chandan Choudhary
@itmvu.ac.in
Associate Professor, MED
ITM Vocational University Vadodara
RESEARCH INTERESTS
Alloy development, Materials Processing, Materials characterization and mechanical property evaluation
Scopus Publications
Scholar Citations
Scholar h-index
Scholar i10-index
Scopus Publications
Chandan Choudhary, Savitesh K. Sharma, Sk M. D. Arif, K. L. Sahoo, Anil Bisen, and Durbadal Mandal
Springer Science and Business Media LLC
Anand Kumbhare, Prasenjit Biswas, Anil Bisen, and Chandan Choudhary
Springer Science and Business Media LLC
Chandan Choudhary, H. N. Bar, Sk MD Arif, K. L. Sahoo, and D. Mandal
Springer Science and Business Media LLC
Chandan Choudhary, K. L. Sahoo, Ashok J. Keche, and D. Mandal
Springer Nature Switzerland
P. K. Ajeet Babu, U. S. Karle, Yogesh Ambhore, and Chandan Choudhary
Springer Science and Business Media LLC
Chandan Choudhary, H. N. Bar, A. K. Pramanick, K. L. Sahoo, and Durbadal Mandal
Springer Science and Business Media LLC
Chandan Choudhary, Kanai Lal Sahoo, Himadri Roy, and Durbadal Mandal
Springer Science and Business Media LLC
Chandan Choudhary, A. K. Pramanick, K. L. Sahoo, and Durbadal Mandal
Informa UK Limited
In this research article, the effect of the strain-induced melt activation (SIMA) process on the microstructure and mechanical properties of the Al–7Si alloy has been investigated. The morphology of α-Al grains is changed from dendritic to fine spherical and flaky type eutectic Si to a fine fibrous eutectic Si after the modified strain-induced melt activation (M-SIMA) process. The intermetallic compounds are refined and distributed uniformly throughout the matrix after the M-SIMA process. The mechanical properties have been improved due to fine spherical grain formation with refined eutectic Si. A high tensile strength (UTS: 204 MPa) with a remarkable improvement in ductility (El: 30%) is achieved after the M-SIMA process at 585°C for 30 min in comparison to the as-cast Al–7Si alloy (UTS: 117 MPa, El: 16%).
Chandan Choudhary, Kanai Lal Sahoo, and Durbadal Mandal
Informa UK Limited
In the present study, the microstructural features and its correlation with mechanical properties of modified strain-induced melt activation (modified SIMA) processed Al- (7, 12, 14 wt-%) Si alloys are investigated. The microstructure of modified SIMA process Al–Si alloys consists of globular α-Al grains, primary Si particles and Al–Si eutectic phase. The casting defects and surface roughness are minimised and the morphology of eutectic silicon is modified after modified SIMA treatment. The mechanical properties of modified SIMA processed samples are increased significantly as compare to as-cast alloy due to reduction of porosity, formation of fine globular microstructu+re and accumulation of high dislocation tangle near primary Si particles.
Chandan Choudhary, K. L. Sahoo, and D. Mandal
Springer International Publishing
Durbadal Mandal, Laxmi Murmu, Chandan Choudhary, Gaurav Singh, and K. L. Sahoo
Informa UK Limited
ABSTRACT In the present investigation, the effects of alloying elements (Sn, Pb) and grain refiner (Ag, Zr) on microstructure, mechanical and wear properties of as-cast Mg-Al-Zn alloys were studied. The alloys were prepared through melting-casting route under a protective atmosphere and cast into a permanent mould. The microstructure of the base alloy consisted of α-Mg, Mg17Al12 continuous eutectic phase at the grain boundary and Mg-Zn phase was distributed within the grains. Addition of Sn and Pb suppressed the formation of continuous Mg17Al12 eutectic phase and formed Pb enriched Mg2Sn precipitates at the grain boundary as well as inside the grain. The Ag and Zr addition to Mg-Al-Zn-Sn-Pb alloy suppressed the Mg17Al12 phase formation and refined the grains leading to improve mechanical properties. Addition of Sn, Pb and grain refiner (Ag, Zr) significantly enhanced the tensile strength and elongation but reduced hardness. The Ag addition imparted best tensile properties, where ultimate tensile strength (UTS) and elongation are 205 MPa and 8.0%, respectively. The fracture surfaces were examined under SEM which revealed cleavage facets and dimple formation. Therefore, the cleavage fracture and dimple rupture were considered as the dominant fracture mechanisms for developed Mg alloys. The cumulative volume loss of Mg alloys increased with sliding distance and applied load. The coefficient of friction decreased with sliding distance. The microscopic observation, analysis of the wear surface and coefficient of friction revealed that the wear mechanism of developed Mg alloys changes from abrasion oxidation to delamination wear.
Chandan Choudhary, K. L. Sahoo, and D. Mandal
Springer International Publishing
Chandan Choudhary, K.L. Sahoo, and D. Mandal
Elsevier BV