Chatterjee, D P (1968) Role of Indian Ordnance Factories in the Development of some of the Important Cast and Wrought Aluminium Alloys during the last three decades. In: Symposium on Non-ferrous Metals Technology:Papers for Presentation, 4th - 7th Dec.1968, National Metallurgical Laboratory(CSIR), Jamshedpur.
Aluminium is one of the newest of the major indus-trial metals. More than a century back, in 1954, the first industrial process of reduction by Henri Saint - Claire Deville was estabilished and the 75th anniversary of the discovery by Paul Heroult in France and Charless Hall in America of the electrolytic process of extraction was cele-brated in 1961. Its earlier industrial development follo-wed the same traditional pattern of the older metals, but in the first decade of 20th century certain aluminium alloys were found to exhibit age-hardening properties which were until then/quite unknown. The discovery by Alfred Wilm of the effect of quenching the solid solution alloy, with its subsequent ability to strengthen by prec-ipitation opened up new and exciting prospects. New fami-lies of aluminium alloys have now been developed and brou-ght into successful commercial use. The use of optical and electron microscopes to investigate the structural changes and the adoption of X-ray crystallography, all contributed to the general under- standing of the solution-treatment and age-hardening phenomena.
|Item Type:||Conference or Workshop Item (Lecture)|
|Uncontrolled Keywords:||Ordnance factories; wrought aluminium alloys; aluminium alloy|
|Divisions:||Metal Extraction and Forming|
|Deposited By:||Sahu A K|
|Deposited On:||19 Dec 2011 16:21|
|Last Modified:||19 Dec 2011 16:21|
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