Perspectives in Physical Metallurgy

Physical metallurgy of nickel aluminides

A description of the important physical metallurgy aspects of Ni3Al and NiAl encompassing structure, crystallographic defects, slip systems and phase stability has been presented in this article. The microstructures generated in the two alloys by conventional as well as novel processing techniques have been discussed. The effect of alloying additions on the microstructure has been enumerated. B...

High entropy alloys: a renaissance in physical metallurgy*

Perspectives in Physical Morphology

In the first section of these lectures I outline the classical framework of the Hubble classification system. Because of space limitations I will focus on points of controversy concerning the physical interpretation of the Hubble sequence, showing how morphological ideas shape our understanding of galaxy evolution. I will then present an overview of the remarkable progress made in recent years ...

Decreasing Co2 Emissions in Metallurgy

Modern trends in iron metallurgy. Global carbon emissions from iron production. New solution for iron and steelmaking in a way reduce the CO2 emission to the level, where this might be needed in the post Kyoto period. New blast furnace technology, which operate with very low CO2 emissions based on drastically reduced consumption of carbon containing input materials. Injection of reducing gases ...

Aryan Invasion in the Indian Subcontinent: Facts and Fallacies The Physical Anthropological Perspectives

The concept of Indo-Aryan group of peoples and their invasion has played a prominent role in explaining thecultural history of the Indian sub-continent. It was propounded that the Aryans, living somewhere outside India,invaded the Indian sub-continent around 1500 B.C. and after supplanting the indigenous powers and culturessettled in India. The Aryans were held responsible for the destruction o...