IDR Logo

Please use this identifier to cite or link to this item: http://idr.iitbbs.ac.in/jspui/handle/2008/691
Title: Effect of Thixoforming on the Microstructure and Tensile Properties of A356 Alloy and A356-5TiB2 In-situ Composite
Authors: Deepak Kumar S.
Mandal A.
Chakraborty M.
Keywords: A356 alloy
Cooling slope casting
In situ composites
Semi-solid metal processing
Thixoforming
TiB2
Issue Date: 2015
Citation: 8
Abstract: In the present work, A356 alloy and in situ A356-5TiB2 composite feedstock was produced by employing Cooling slope casting technique. The technique resulted in near spherical morphology of primary ?-Al phase in the feedstock of both the alloy and composite. A fine distribution of eutectic Si phase within the matrix was observed in the composite feedstock. The rheocast billets of both the alloy and composite were then thixoformed successfully at 50�% solid fraction temperatures of 580 and 585��C respectively. Further, tensile properties of thixoformed alloy and composite were measured and compared with those of gravity-cast samples. It was observed that the % increase in yield strength and tensile strength of thixoformed alloy increased by 43 and 36�% respectively with respect to the gravity-cast alloy. The thixoformed composite attained the highest ultimate tensile strength of 211�MPa which is about 40�% higher as compared to gravity-cast alloy. Interestingly, the ductility of the composites is comparable to that of alloy after thixoforming. � 2015, The Indian Institute of Metals - IIM.
URI: http://dx.doi.org/10.1007/s12666-015-0521-0
http://10.10.32.48:8080/jspui/handle/2008/691
Appears in Collections:Research Publications

Files in This Item:
There are no files associated with this item.


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.