Mukhopadhyay, S.; Pandey, P.; Baler, N.; Biswas, K.; Makineni, S. K.; Chattopadhyay, K.: The role of Ti addition on the evolution and stability of γ/γ′ microstructure in a Co–30Ni–10Al–5Mo–2Ta alloy. Acta Materialia 208, 116736 (2021)
He, J.; Wu, X.; Guo, Y.; Makineni, S. K.: On the compositional and structural redistribution during partial recrystallisation: a case of σ-phase precipitation in a Mo-doped NiCoCr medium-entropy alloy. Scripta Materialia 194, 113662 (2021)
He, J.; Cao, L.; Makineni, S. K.; Gault, B.; Eggeler, G. F.: Effect of interface dislocations on mass flow during high temperature and low stress creep of single crystal Ni-base superalloys. Scripta Materialia 191, pp. 23 - 28 (2021)
Im, H. J.; Makineni, S. K.; Oh, C.-S.; Gault, B.; Choi, P.-P.: Elemental Sub-Lattice Occupation and Microstructural Evolution in γ/γ′ Co–12Ti–4Mo–Cr Alloys. Microscopy and Microanalysis; First View, pp. 1 - 5 (2021)
Pandey, P.; Mukhopadhyay, S.; Srivastava, C.; Makineni, S. K.; Chattopadhyay, K.: Development of new γ′-strengthened Co-based superalloys with low mass density, high solvus temperature and high temperature strength. Materials Science and Engineering A: Structural Materials Properties Microstructure and Processing 790, 139578 (2020)
Baler, N.; Pandey, P.; Palanisamy, D.; Makineni, S. K.; Phanikumar, G.; Chattopadhyay, K.: On the effect of W addition on microstructural evolution and gamma' precipitate coarsening in a Co–30Ni–10Al–5Mo–2Ta–2Ti alloy. Materialia 10, 100632 (2020)
Kumar, A.; Dutta, A.; Makineni, S. K.; Herbig, M.; Petrov, R.; Sietsma, J.: In-situ observation of strain partitioning and damage development in continuously cooled carbide-free bainitic steels using micro digital image correlation. Materials Science and Engineering A: Structural Materials Properties Microstructure and Processing 757, pp. 107 - 116 (2019)
Pandey, P.; Makineni, S. K.; Gault, B.; Chattopadhyay, K.: On the origin of a remarkable increase in the strength and stability of an Al rich Al–Ni eutectic alloy by Zr addition. Acta Materialia 170, pp. 205 - 217 (2019)
International researcher team presents a novel microstructure design strategy for lean medium-manganese steels with optimized properties in the journal Science
This project with the acronym GB-CORRELATE is supported by an Advanced Grant for Gerhard Dehm by the European Research Council (ERC) and started in August 2018. The project GB-CORRELATE explores the presence and consequences of grain boundary phase transitions (often termed “complexions” in literature) in pure and alloyed Cu and Al. If grain size…
The segregation of impurity elements to grain boundaries largely affects interfacial properties and is a key parameter in understanding grain boundary (GB) embrittlement. Furthermore, segregation mechanisms strongly depend on the underlying atomic structure of GBs and the type of alloying element. Here, we utilize aberration-corrected scanning…
This project studies the influence of grain boundary chemistry on mechanical behaviour using state-of-the-art micromechanical testing systems. For this purpose, we use Cu-Ag as a model system and compare the mechanical response/deformation behaviour of pure Cu bicrystals to that of Ag segregated Cu bicrystals.
Nickel-based alloys are a particularly interesting class of materials due to their specific properties such as high-temperature strength, low-temperature ductility and toughness, oxidation resistance, hot-corrosion resistance, and weldability, becoming potential candidates for high-performance components that require corrosion resistance and good…
In this project, we aim to enhance the mechanical properties of an equiatomic CoCrNi medium-entropy alloy (MEA) by interstitial alloying. Carbon and nitrogen with varying contents have been added into the face-centred cubic structured CoCrNi MEA.
Grain boundaries are one of the most important constituents of a polycrystalline material and play a crucial role in dictating the properties of a bulk material in service or under processing conditions. Bulk properties of a material like fatigue strength, corrosion, liquid metal embrittlement, and others strongly depend on grain boundary…