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Article
Wootz: Erroneous Transliteration of Sanskrit “Utsa” used for Indian Crucible Steel
The terminology Wootz for the legendary Indian crucible steel was first introduced by Helenus Scott in his letter to Joseph Banks, the then President of the Royal Society, London, in 1794. He stated several sa...
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Article
A Novel Powder Metallurgy Processing Approach to Prepare Fine-Grained Cu-Al-Ni Shape-Memory Alloy Strips from Elemental Powders
The current work describes the experimental results related to the successful preparation of fine-grained, Cu-Al-Ni, high-temperature shape-memory alloy (SMA) strips from elemental Cu, Al, and Ni powders via a...
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Article
Processing and Characterization of Cu-Al-Ni Shape Memory Alloy Strips Prepared from Prealloyed Powder by Hot Densification Rolling of Powder Preforms
The present work deals with the preparation of near-full density Cu-Al-Ni shape memory alloy (SMA) strips from argon-atomized prealloyed powder via a powder metallurgy (PM) route comprising cold die compaction to...
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Article
Directly smelted lead-tin alloys: A historical perspective
This paper discusses evidence related to the genesis and occurrence of mixed lead-tin ore deposit consisting of cassiterite and the secondary minerals formed from galena. These evidences belong to a very long ...
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Article
Moisture conservation and nitrogen recycling through legume mulching in rainfed maize (Zea mays)–wheat (Triticum aestivum) crop** system
Mulching with vegetative materials is a highly beneficial and widely-investigated agro-technique in rainfed areas but the adoption of this practice has been constrained due to non-availability of mulch biomass...
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Article
Studies on the mechanism of the structural evolution in Cu–Al–Ni elemental powder mixture during high energy ball milling
The present work is focused on the understanding of the phase and microstructural evolution during mechanical alloying of 82Cu–14Al–4Ni powder mixture. Morphology and phase evolution in the milled powder at di...
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Article
Preparation of nanocrystalline Ni–Fe strip via mechanical alloying–compaction–sintering–hot rolling route
Nanocrystalline structures offer opportunity for the development of soft magnetic materials, such as 80 wt% Ni–20 wt% Fe, with superior properties. In recent years, nanocrystalline 80Ni–20Fe (wt%) alloy has be...
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Article
Studies on the Mechanical Alloying of Ni-Fe-Co Powders and Its Explosive Compaction
A bulk nanocrystalline 80Ni-15Fe-5Co (wt pct) soft magnetic material was successfully produced via “mechanical alloying-explosive compaction” route. A rapid grain refining was observed during initial 12 hours of ...
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Article
Ferrous arrowheads and their oil quench hardening: Some early Indian evidence
A wide variety of ferrous arrowheads were in use in ancient India. Several typical chemical analyses of arrowheads found from archaeological excavation carried out at Kaushambi are reported in this paper. The ...
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Article
Modeling Microstructural Evolution During Dynamic Recrystallization of Alloy D9 Using Artificial Neural Network
An artificial neural network (ANN) model was developed to predict the microstructural evolution of a 15Cr-15Ni-2.2Mo-Ti modified austenitic stainless steel (Alloy D9) during dynamic recrystallization (DRX). Th...
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Article
Kinetics, mechanism and modelling of microstructural evolution during thermomechanical processing of a 15Cr–15Ni–2.2Mo–Ti modified austenitic stainless steel
The paper discusses the kinetics, mechanism and modelling of the microstructural evolution of a 15Cr–15Ni–2.2Mo–0.3Ti modified austenitic stainless steel (alloy D9) during dynamic recrystallization (DRX). The ...
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Article
The extraction of lead from its ores by the iron-reduction process: A historical perspective
The iron-reduction process for extracting lead from its ores, as practiced in different parts of the world, is reviewed and discussed in this paper based on literary and documentary evidence. It has been shown...
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Article
Gold powder: Its preparation & application as described in ancient Sanskrit texts
In this article the origin and development of the technology of gold powder in ancient India is described on the basis of the literary evidence cited in various Sanskrit texts. The applications of gold powder ...
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Article
Changes in the longitudinal flow and apparent plastic poisson’s ratio of a porous metal strip during hot densification rolling
Analytical relationships between the longitudinal flow and the thickness deformation, and between the apparent plastic Poisson’s ratio and the relative density of a porous metal strip during hot rolling have b...
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Article
A study of the crustal structure beneath the Himalayas from body waves
The crustal structure beneath the Himalayas has been investigated using body wave data from near earthquakes having epicentres over the Himalayas and recorded by the observatories situated over, or very near, ...
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Article
Crustal structure of the Peninsular India
Earthquake parameters for the forty aftershocks of the main Koyna earthquake of 10 December, 1967, have been determined. Depths of the foci of the earthquakes have been found to vary between 2 to 17 km. The ve...
