Improving plasticity in bulk metallic glasses
Metallic glasses possess properties like high strength, low elastic modulus and high elastic strain compared to their crystalline counterparts. However, they suffer from a lack of plasticity during mechanical deformation. Past research has shown that by generating nanostructural heterogeneities, plasticity can be improved in Cu-Zr binary metallic nanoglasses. In this context, one of the group's primary objectives is to improve the plasticity of bulk metallic glasses by promoting chemical segregation.
S.H. Nandam et al., Journal of Materials Research 36 (2021) 2903-2914.
S.H. Nandam et al., Acta Materialia, 136 (2017) 181-189.
Deformation behaviour in multi-phase aluminum alloys using Finite Element Modeling
Understanding the deformation response of metallic alloys through finite element simulations is quite a challenging task, especially when multiple phases and their interactions are considered. In this work, alloys with two or more phases are studied for their mechanical behaviour in both experiments and finite element simulations. A generalized model is used to predict the mechanical response of the alloys. This work is done in collaboration with Dr. Srihari Dodla of Mechanical Engineering, IIT(BHU).
Additive manufacturing of Aluminum alloys
Wrought aluminum alloys like 6xxx series tend to hot tear during additive manufacturing. By the addition of grain refiners, such microcracks can be prevented during the solidification of 3-D printed components.
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