Next Article in Journal
Towards Highly Performing and Stable PtNi Catalysts in Polymer Electrolyte Fuel Cells for Automotive Application
Previous Article in Journal
Experimental Study on the Fire Properties of Nitrocellulose with Different Structures
Open AccessArticle

Negative Temperature Dependence of Recrystallized Grain Size: Formulation and Experimental Confirmation on Copper

School of Material Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
*
Authors to whom correspondence should be addressed.
Academic Editor: Dinesh Agrawal
Materials 2017, 10(3), 308; https://doi.org/10.3390/ma10030308
Received: 7 December 2016 / Revised: 21 February 2017 / Accepted: 10 March 2017 / Published: 21 March 2017
The catalyzing effect on nucleation of recrystallization from existing grains resulting from previous lower temperature deformation is analyzed, analogous to the size effect of foreign nucleus in heterogeneous nucleation. Analytical formulation of the effective nucleation site for recrystallization leads to a negative temperature dependence of recrystallized grain size of metals. Non-isochronal annealing—where annealing time is set just enough for the completion of recrystallization at different temperatures—is conducted on pure copper after severe plastic deformation. More homogeneous and smaller grains are obtained at higher annealing temperature. The good fit between analytical and experimental results unveils the intrinsic feature of this negative temperature dependence of recrystallized grain size. View Full-Text
Keywords: catalyzed nucleation; high angle grain boundary (HAGB); recrystallization; equal channel angular pressing (ECAP); negative temperature dependence catalyzed nucleation; high angle grain boundary (HAGB); recrystallization; equal channel angular pressing (ECAP); negative temperature dependence
Show Figures

Graphical abstract

MDPI and ACS Style

Elmasry, M.; Liu, F.; Jiang, Y.; Mao, Z.N.; Liu, Y.; Wang, J.T. Negative Temperature Dependence of Recrystallized Grain Size: Formulation and Experimental Confirmation on Copper. Materials 2017, 10, 308.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop