Abstract
Polycrystalline and mosaic bicrystalline titanium films were subjected to steep heating/cooling rate of 1011∕108Ks−1 by laser pulsing. The induced phase transformations were followed by imaging and diffraction with a dynamic transmission electron microscope on the time scale of nanoseconds. On heating the film up to near the melting point with a 6-ns laser pulse, the low-temperature hcp phase transformed to the high-temperature bcc phase, with a nucleation rate of 1025m−3s−1 and a crystal-growth velocity of about 1000ms−1. Quenching of molten Ti first produced the bcc phase, which in turn transformed to the hcp phase within a few microseconds. Thus, hcp-bcc transformations occur in Ti, even at the above high thermal rates. They are martensitic and not diffusion limited as claimed for transformations at low thermal rates.
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Dates
Type | When |
---|---|
Created | 19 years, 11 months ago (Sept. 9, 2005, 6:01 p.m.) |
Deposited | 2 years, 1 month ago (June 30, 2023, 8:50 p.m.) |
Indexed | 3 weeks, 5 days ago (July 30, 2025, 6:45 a.m.) |
Issued | 19 years, 11 months ago (Sept. 1, 2005) |
Published | 19 years, 11 months ago (Sept. 1, 2005) |
Published Online | 19 years, 11 months ago (Sept. 13, 2005) |
Published Print | 19 years, 11 months ago (Sept. 1, 2005) |
@article{Kleinschmidt_2005, title={Phase transformation analysis in titanium at nanosecond time resolution}, volume={98}, ISSN={1089-7550}, url={http://dx.doi.org/10.1063/1.2035899}, DOI={10.1063/1.2035899}, number={5}, journal={Journal of Applied Physics}, publisher={AIP Publishing}, author={Kleinschmidt, H. and Ziegler, A. and Campbell, G. H. and Colvin, J. D. and Bostanjoglo, O.}, year={2005}, month=sep }