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Reactive Wetting of Pure Titanium by Molten 6061 and 4043 Aluminum Alloys
- Source :
- Cailiao gongcheng, Vol 45, Iss 12, Pp 17-24 (2017)
- Publication Year :
- 2017
- Publisher :
- Journal of Materials Engineering, 2017.
-
Abstract
- The wetting of TA2 pure Ti by two industrial grade Al alloys (i.e.,6061 Al and 4043 Al alloys) was studied by using the modified sessile drop method at 600,650,700℃ under high vacuum. The results show Al/Ti system is a typical reactive wetting, the small amount of alloying element Si in the Al alloys can cause significant enrichment at liquid/solid interface and satisfy thermodynamic condition;the formation of the Si-rich phase (Ti7Al5Si12) strangling material exchange at triple line zone; Ti7Al5Si12 decomposition and Al3Ti formation can remove the oxide film and promote wetting;the spreading dynamics can be described by reaction product control model, further the whole wetting behavior can be divided into two stages:the first stage for the nonlinear spreading and the second stage forthe linear spreading;the activation energies which are 56kJ/mol, 47kJ/mol for nonlinear stages of 6061 Al and 4043 Al alloys, and 112kJ/mol for linear stage of 6061 Al alloys, respectively,Ti7Al5Si12 decomposition is corresponding to the nonlinear spreading.
Details
- Language :
- Chinese
- ISSN :
- 10014381
- Volume :
- 45
- Issue :
- 12
- Database :
- Directory of Open Access Journals
- Journal :
- Cailiao gongcheng
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.6a803e619a224952a0f25952c130f0b7
- Document Type :
- article
- Full Text :
- https://doi.org/10.11868/j.issn.1001-4381.2017.000684