Testing of liquid and solidification contraction of aluminium alloys

Samek , Norbert (1968) Testing of liquid and solidification contraction of aluminium alloys. In: Symposium on Non-ferrous Metals Technology. NML Jamshedpur, Jamshedpur, pp. 106-114.



THE shrinkage of metals in the mold can be divided into three distinctly different steps : (a) liquid contraction during cooling of the metal from the pouring temperature to the solidification temperature, (b)solidification contraction as it passes from the liquid to the solid state, between the liquidus and solidus temperatures, and (c) solid contraction as the solid casting cools to room temperature. The first two forms of contraction are mainly responsible for the formation of shrinkage cavities in casting and the solidification contraction is by far the most important in this respect. The solid contraction appears as the reduction of linear dimensions of the solidified casting as compared with the mold cavity and is responsible for warping, hot tearing of castings etc. While there are sufficient data available in the litera-ture regarding solid contraction and total contraction of metals, there are relatively few data available for liquid and solidification contraction of different alloys due to experimental difficulties involved in their deter-mination

Item Type:Book or NML Publication
Official URL/DOI:http://eprints.nmlindia.org/3778
Uncontrolled Keywords:Warping, hot tearing of castings, Solid contraction
Divisions:Metal Extraction and Forming
ID Code:3778
Deposited By:Sahu A K
Deposited On:13 Aug 2011 18:21
Last Modified:06 Jan 2012 11:52
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