THE OBSERVATION OF TENSILE SUPERPLASTICITY IN NANOCRYSTALLINE MATERIALS

Authors
MISHRA RS VALIEV RZ MUKHERJEE AK
Citation
Rs. Mishra et al., THE OBSERVATION OF TENSILE SUPERPLASTICITY IN NANOCRYSTALLINE MATERIALS, Nanostructured materials, 9(1-8), 1997, pp. 473-476
Citations number
12
Categorie Soggetti
Material Science
Journal title
Nanostructured materials → ACNP
ISSN journal
09659773
Volume
9
Issue
1-8
Year of publication
1997
Pages
473 - 476
Database
ISI
SICI code
0965-9773(1997)9:1-8<473:TOOTSI>2.0.ZU;2-D
Abstract
The flow behavior of nanocrystalline Pb-62Sn and Zn-22Al alloys is rep orted Tensile superplasticity has been observed at room temperature in the nanocrystalline Pb-Sn alloy and at 393 K in the nanocrystalline Z n-Al alloy. The strain rare sensitivity value is similar to 0.45 for P b-Sn alloy at room temperature, indicating a grain boundary sliding me chanism. The elongation at a strain rate of 4.8x10(-4) s(-1) is simila r to 300% for the Pb-Sn alloy. (C) 1997 Acta Metallurgica Inc.