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Inoculation of Al Alloys with Ti
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
2005 (English)In: TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS, 2005, Vol. 58, no 4, 553-556 p.Conference paper, Published paper (Refereed)
Abstract [en]
The solubility of Ti in the liquid in equilibrium with Al3Ti is discussed. From this discussion, it is suggested that Al3Ti is the phase nucleating Al. The proposal is based on evaluation of enthalpy and entropy of formation of Al3Ti of experiments reported in literature. The heat of formation was found to be dependent on the processing. The variation of solubility is an effect of lattice defects in Al3Ti. The effect of B on inoculation is discussed. TiB2 acts as an inoculant of Al3Ti and Al is nucleated on Al3Ti.
Place, publisher, year, edition, pages
2005. Vol. 58, no 4, 553-556 p.
Series
TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS, ISSN 0019-493X
Keyword [en]
ALUMINUM; TITANIUM
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:kth:diva-5513ISI: 000232332700009Scopus ID: 2-s2.0-33644699083OAI: oai:DiVA.org:kth-5513DiVA: diva2:9904
Conference
2nd International Conference on Solidification Science and Processing Bangalore, INDIA, NOV 17-20, 2004 Indian Inst Technol Kharagpur
Note
QC 20100602Available from: 2006-03-22 Created: 2006-03-22 Last updated: 2010-06-02Bibliographically approved
In thesis
1. On the Nucleation and Inoculation of Metals
Open this publication in new window or tab >>On the Nucleation and Inoculation of Metals
2006 (English)Doctoral thesis, comprehensive summary (Other scientific)
Abstract [en]

Latent heat during recalesence and nucleation and post-recalesence temperature was analysed for refractory metals. An effect on latent heat was found by alloying the pure elements with other refractories. Latent heat was found to be 15-65% of tabulated values. Interface energy was evaluated from undercooling experiments. It was found that the dimensionless numbers β (σLs/ σLv) and α can be used to classify elements into distinctive groups and crystallographic structure.

The phase diagrams for Al-Ti, Al-Ti-B and Al-Ti-C as well as inoculation were analysed. It was found that Al nucleates on Al3Ti which nucleates on TiB2. TiC was found to decompose into Al4C3 and Al3Ti.

The inoculation of nodular cast iron with Mg, Ce; Ca and the formation of sulphides and oxides was analysed. The formation of new inclusions during the solidification as well as the formation of graphite is discussed.

Place, publisher, year, edition, pages
Stockholm: KTH, 2006. 13 p.
Series
Trita-MG, ISSN 1104-7127 ; 2006:02
Keyword
Solidification, nucleation, inoculation, undercooling, interface energy, refractory metals, latent heat, inclusions, nodular cast iron
National Category
Materials Engineering
Identifiers
urn:nbn:se:kth:diva-3893 (URN)
Public defence
2006-03-24, M3, 43:38, Brinellv.64, Stockholm, 10:15 (English)
Opponent
Supervisors
Note
QC 20100602Available from: 2006-03-22 Created: 2006-03-22 Last updated: 2010-06-02Bibliographically approved

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