Optimization of Homogenization Parameters of Al-Cu-Li Alloy Cast Ingots Using Calorimetry and Metallographic Techniques

Niraj Nayan; S.V.S. Narayana Murty; S.C. Sharma; K. Sreekumar; Parameshwar Prasad Sinha

doi:10.4028/www.scientific.net/MSF.710.557

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HomeMaterials Science ForumMaterials Science Forum Vol. 710Optimization of Homogenization Parameters of...

Optimization of Homogenization Parameters of Al-Cu-Li Alloy Cast Ingots Using Calorimetry and Metallographic Techniques

Abstract:

In the present study, thermal treatments for homogenizing cast structures of Al-Cu-Li alloy AA2195 for improved workability are developed chiefly by empirical methods and detailed Differential Scanning Calorimetry (DSC) and microstructural characterization. DSC has been carried out on as-cast samples to establish the homogenization temperatures and avoid incipient melting. Homogenization time has been calculated empirically and microstructural characterization and DSC has been carriedout to after each cycle to validate the empirically established homogenization cycle. Homogenization cycle (435°C/8hrs+495°C/12hrs+525°C/32hrs) has been established for AA2195 alloy having an average grain size of 500μm based on calorimetric studies and microstructural examination.

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Periodical:

Materials Science Forum (Volume 710)

Pages:

557-562

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.710.557

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Online since:

January 2012

Authors:

Niraj Nayan, S.V.S. Narayana Murty, S.C. Sharma, K. Sreekumar, Parameshwar Prasad Sinha

Keywords:

Al-Cu-Li Alloy, Differential Scanning Calorimetry (DSC), Eutectic Melting, Homogenization

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