Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Arka Lahiri"'
Publikováno v:
Metallurgical and Materials Transactions A. 48:4463-4476
In multi-component systems, during diffusion-controlled growth of a precipitate from a supersaturated matrix, differential diffusivities lead to a selection of tie-line compositions different from the thermodynamic tie-line containing the alloy compo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::66c35b5808fed07447530d5cbe098a6e
https://doi.org/10.1007/s11661-017-4215-6
https://doi.org/10.1007/s11661-017-4215-6
Publikováno v:
Philosophical Magazine. 97:2705-2735
During solid–solid precipitation, interface free energy anisotropy is known to drive faceting of precipitates. In this paper, using a recently developed phase field formulation based on higher order tensor terms, we develop and implement a family o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::abb2c2af58d992852017c8e8b4f7bd76
https://doi.org/10.1080/14786435.2017.1348633
https://doi.org/10.1080/14786435.2017.1348633
Publikováno v:
Computational Materials Science. 130:109-120
Instability of a binary eutectic solidification front to morphological perturbations due to rejection of a ternary impurity leads to the formation of eutectic colonies. Whereas, the instability dynamics and the resultant microstructural features are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fdcc41ce2cff88de08e1e8ba0eaa2b6b
https://doi.org/10.1016/j.commatsci.2017.01.007
https://doi.org/10.1016/j.commatsci.2017.01.007
Autor:
Abhik Choudhury, Arka Lahiri
Publikováno v:
IndraStra Global.
The principal length scales associated with dendritic solidification, which being the dendritic tip-radius (R-tip) and the primary dendritic arm spacing, are functions of the relative solutal interdiffusivities of the different components in a multi-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::010d67748915998ad58d33158f3f6131
http://eprints.iisc.ac.in/61631/1/Com_Mat_Sci_158_209_2019.pdf
http://eprints.iisc.ac.in/61631/1/Com_Mat_Sci_158_209_2019.pdf
Autor:
Abhik Choudhury, Arka Lahiri
Publikováno v:
Transactions of the Indian Institute of Metals. 68:1053-1057
Eutectic growth offers a variety of examples for pattern formation which are interesting both for theoreticians as well as experimentalists. One such example of patterns is ternary eutectic colonies which arise as a result of instabilities during gro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3062b7507347a4250a4d5e764a0afddf
https://doi.org/10.1007/s12666-015-0645-2
https://doi.org/10.1007/s12666-015-0645-2
Autor:
Abhik Choudhury, Arka Lahiri
A straight-forward extension of the Jackson-Hunt theory for directionally solidifying multi-phase growth where the number of components exceeds the number of solid phases becomes difficult on account of the absence of the required number of equations
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0008e70f2519a51a9766dbf25036dc58
http://arxiv.org/abs/1612.03376
http://arxiv.org/abs/1612.03376
Publikováno v:
Modelling and Simulation in Materials Science and Engineering
Lahiri, A, Shanthraj, P & Roters, F 2019, ' Understanding the mechanisms of electroplasticity from a crystal plasticity perspective ', Modelling and Simulation in Materials Science and Engineering, vol. 27, no. 8, pp. 085006 . https://doi.org/10.1088/1361-651X/ab43fc
Lahiri, A, Shanthraj, P & Roters, F 2019, ' Understanding the mechanisms of electroplasticity from a crystal plasticity perspective ', Modelling and Simulation in Materials Science and Engineering, vol. 27, no. 8, pp. 085006 . https://doi.org/10.1088/1361-651X/ab43fc
Electroplasticity is defined as the reduction in flow stress of a material undergoing deformation on passing an electrical pulse through it. The lowering of flow stress during electrical pulsing has been attributed to a combination of three mechanism
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eab3722017bd94cd268c79886f122ef6
https://doi.org/10.1088/1361-651x/ab43fc
https://doi.org/10.1088/1361-651x/ab43fc
Autor:
Arka Lahiri, Abhik Choudhury
Mechanical properties of engineering alloys are strongly correlated to their microstructural length scale. Diffusive insta- bilities of the Mullins-Sekerka type is one of the principal mechanisms through which the scale of the microstructural feature
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::063141d50d30f1ac7fb1031f46c6c95b
http://arxiv.org/abs/1607.02570
http://arxiv.org/abs/1607.02570
Autor:
Gururajan, M. P., Arka Lahiri
Publikováno v:
Scopus-Elsevier
This review is on the phase field modelling studies in elastic stress effects on microstructural instabilities. We will focus primarily on four elastic stress driven instabilities: (i) Spinodal phase separation; (ii) Particle splitting; (iii) Rafting
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c426e78db97b8e750d826886e8486b3a
http://arxiv.org/abs/1607.00599
http://arxiv.org/abs/1607.00599
Autor:
Kisor K. Sahu, Arka Lahiri
Publikováno v:
Philosophical Magazine. 84:1185-1196
Recursive analytical formulation for calculating the insphere in an irregular convex polyhedron has been developed. Emphasis has been placed on using coordinate geometry so that the geometric theories can be used without much modification. The result
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c608be2ff49068cd08e0bd2dc14304cc
https://doi.org/10.1080/14786430310001647159
https://doi.org/10.1080/14786430310001647159