Surface nanocrystallization of iron induced by ultrasonic shot peening

Authors
Tao, NR Sui, ML Lu, J Lu, K
Citation
Nr. Tao et al., Surface nanocrystallization of iron induced by ultrasonic shot peening, NANOSTR MAT, 11(4), 1999, pp. 433-440
Citations number
15
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
NANOSTRUCTURED MATERIALS
ISSN journal
09659773 → ACNP
Volume
11
Issue
4
Year of publication
1999
Pages
433 - 440
Database
ISI
SICI code
0965-9773(199906)11:4<433:SNOIIB>2.0.ZU;2-Y
Abstract
A nanocrystalline surface layer was fabricated on a pure Fe plate by using an ultrasonic shot peening (USSP) technique. The USSP induced surface nanoc rystallization products were characterized by means of X-ray diffraction (X RD) and transmission electron microscope (TEM). Experimental evidences show ed that after USSP treatments, the initial coarse-grained structure in the surface layer was refined into equiaxed ultrafine grains (about 10nm) with random crystallographic orientations. The grain refinement mechanism during USSP treatments is discussed. (C)1999 Acta Metallurgica Inc.