Srivastava, V C and Singh, T and Kumar, S and Ghosh Chowdhury, S and Jindal, Vikas (2007) Microstructural Characteristics of Accumulative Roll Bonded Ni-Al Based Metal Intermetallic Laminate Composite. In: International Conference on Recent Advances in Composite Materials, 2007, New Delhi, India, February 20-23, 2007, New Delhi.
|PDF - Accepted Version|
The present investigation is an attempt to develop metal-intermetallic laminate composites based on Ni-Al system. In this study, Ni and Al foils (460 and 90 μm respectively) have been used for the development of Ni-Al laminate using accumulative roll bonding technique at 773 K. The laminate composites were then subjected to controlled annealing at 773 K, 823 K and 873 K for 1, 2 and 4 h to affect reaction at the Ni/Al interface leading to intermetallic compound formation. The accumulative roll bonded laminates showed good bonding of layers. Annealing treatment at 773 K led to slow formation of reaction product but maintained the interface integrity. Annealing at 873 K led to de-lamination of individual layers prior to the completion of reaction. A qualitative compositional analysis at the interfaces reflected the formation of Al-Ni copmpounds, and also a gradual compositional gradient across the interface. This process seems to be of promise so far as the continuous production of large scale metal-intermetallic laminate composites are concerned. A further study is underway to circumvent the delamination problems and property evaluation.
|Item Type:||Conference or Workshop Item (Paper)|
|Uncontrolled Keywords:||Metal intermetallic composite, accumulative roll bonding, Al-Ni, Annealing|
|Divisions:||Metal Extraction and Forming|
|Deposited By:||Dr. V.C. Srivastava|
|Deposited On:||01 Oct 2010 12:56|
|Last Modified:||26 Dec 2011 14:51|
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