One of the primary focus of the group is to correlate microstructure with small scale mechanical properties of NiTi based shape memory alloys. SMAs with a large extent of strain recoverability, termed as pseudoelasticity is increasingly used for miniaturized devices as cardio-vascular stents, sensors, micro-actuators, MEMS etc. Orientation of the grains significantly affect and control the extent of pseudoelasticity. Small scale mechanical performances of such SMAs with a special emphasis on determining the best possible orientations that yield best pseudoelasticity are characterized by the group by implementing indentation.
Mechanical performance and especially fatigue behavior of metallic alloys used for biomedical applications are of serious concern. One of the primary focus of the group is to characterize the in-vitro tensile and fatigue performances of such alloys such as Steels, NiTi and Ti alloys. Biomedical implants including cardiovascular stents, orthodontic braces etc. are used in the form of wires. Such implants tend to withstand corrosive atmosphere inside the body along with substantial stresses and their fluctuations for prolonged periods. To characterize their performance, tensile and fatigue properties of wires are studied by the group by immersing the wires in body like atmosphere in simulated body fluids along with the application of fluctuating loads. Moreover, studies are also performed on alloys used for marine applications, for example Steels with the application of saline water along with monotonic and fluctuating loads.
High temperature alloys such as newly developed third generation TiAl based intermetallic alloys are increasingly used in aerospace applications owing to their outstanding high temperature strength. Performance of such alloys with the simultaneous application of higher temperatures and fluctuating loads are aimed to be investigated by the group. The objective is to characterize the high temperature mechanical performances of indigenously produced alloys which would be beneficial for aerospace and defense applications.
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Assessment of small-scale deformation characteristics and stress-strain behavior of NiTi based shape memory alloy using nanoindentation S S. K., Kumar I. A., Marandi L. , Sen I. By Acta Materialia 201 303-315 (2020)
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A Comparative Study on Deformation Behaviour of Superelastic NiTi with Traditional Elastic Plastic Alloys in Sub-micron Scale S S. K., Sen I. By Transactions of the Indian Institute of Metals 74(10) 2427-2434 (2021)
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In-vitro mechanical behaviour and high cycle fatigue characteristics of NiTi-based shape memory alloy wire Marandi L., Sen I. By International Journal of Fatigue 148 1062261-13 (2021)
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Microstructure - Property correlations for additively manufactured NiTi based shape memory alloys S S. K., Marandi L. , Balla V. K., Bysakh S. , Piorunek D. , Eggeler G. , Das M. , Sen I. By Materialia 8 (100456) 1-17 (2019)
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Effect of saline atmosphere on the mechanical properties of commercial steel wire Marandi L., Sen I. By Metallurgical and Materials Transactions A 50A 132-141 (2019)
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A review on Micro-Mechanical Testing of NiTi Based Shape Memory Alloys S S. K., Arohi A. C., Sen I. By Journal of the Indian Institute of Science - (2021)
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Assessment of microstructural variation and mechanical properties of laser metal deposited 316L stainless steel Nath P., Nanda D. , Dinda G. P., Sen I. By Journal of Materials Engineering and Performance 30 6996-7006 (2021)
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A comprehensive study on the fabrication and characterization of Ti 48Al 2Cr 2Nb preforms manufactured using electron beam melting Cakmak E., Nandwana P. , Shin D. , Yamamoto Y. , Gussev M. N., Sen I. , Seren M. H., Watkins T. R., Haynes J. A. By Materialia 6 (100284) 1-13 (2019)
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Microstructure, Corrosion and Mechanical Behavior of 15-5 PH Stainless Steel Processed by Direct Metal Laser Sintering Avula I., Arohi A. C., Kumar C. S., Sen I. By Journal of Materials Engineering and Performance 30 6924-6937 (2021)
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Characterizing Stress-Strain behavior of Materials through Nanoindentation Sen I., S S. K. By Elasticity of Materials 1-17 (2022)
Principal Investigator
- Development of wrought Al-Cu-Mn-Zr (ACMZ) alloys for high temperature (above 350C) applications
- Evaluation of Microstructural Influence on the Mechanical Properties of Laser Cladded Tool Steel
- Materials Development for High Temperature Radome Application
- Sol-gel synthesis of nano bioactive glass-ceramic nanoparticles with doped ions using a modified Stober method for bone tissue regeneration
- Understanding MTR formation and its removal strategies during secondary TMP of Ti-6Al-4V alloy (DST-SERB part)
- Understanding MTR formation and its removal strategies during secondary TMP of Ti-6Al-4V alloy (Industry Part)
Ph. D. Students
Abhijit Kumar Khanra
Area of Research: Microstructure and Properties of Steel
Adya Charan Arohi
Area of Research: Fatigue of Titanium alloys
Arjun Mahato
Area of Research: Nano-structure formation in metal working
Chandan Kumar
Area of Research: Mechanical properties of metal matrix composites
Deepak Kumar
Area of Research: High Strength Steel
Md Shahwaz
Area of Research: Fracture and Fatigue Behavior of Materials
Prekshya Nath
Area of Research: High temperature mechanical behavior of Ti alloys
Priyadarshini Nayak
Area of Research: Microstructure property correlation of shape memory alloy
Samarendra Roy
Area of Research: Design and development of high temperature high strength Aluminum alloys by nanostructural engineering
Sk Wasim Haidar
Area of Research: High temperature mechanical properties of materials
