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https://hdl.handle.net/2440/66248
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Type: | Journal article |
Title: | Impact of melt treatment on semi-solid metal processing |
Author: | Nafisi, S. Ghomashchi, R. |
Citation: | Journal of Alloys and Compounds, 2007; 436(1-2):86-90 |
Publisher: | Elsevier Science Sa |
Issue Date: | 2007 |
ISSN: | 0925-8388 1873-4669 |
Statement of Responsibility: | Sahrooz Nafisi, Reza Ghomashchi |
Abstract: | The concurrent presence of liquid and primary solid particles is the principal requirement for semisolid metal (SSM) processing. It is proposed that in addition to the temperature sensitivity of the solid fraction and the SSM temperature process window, partitioning of the solidification range is also essential. The solidification range of hypoeutectic Al-Si alloys is divided into two distinct temperature intervals of α-Al primary particles formation and eutectic and post-eutectic reactions zone. The primary particles are formed in three steps of α-Al nucleation, dendrite to rosette/globular transformation and coarsening of the primary α-Al particles over the entire solidification range. Furthermore the effects of inoculation and modification on these temperature intervals are discussed and elaborated for hypoeutectic Al-Si alloys. © 2006 Elsevier B.V. All rights reserved. |
Keywords: | Semisolid Solidification range Al–Si alloys Grain refiner Modifier |
Rights: | © 2006 Elsevier B.V. All rights reserved. |
DOI: | 10.1016/j.jallcom.2006.07.046 |
Published version: | http://dx.doi.org/10.1016/j.jallcom.2006.07.046 |
Appears in Collections: | Aurora harvest Materials Research Group publications Mechanical Engineering publications |
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