Loading…
Shot Peening - A New Method for Improving Mechanical Properties of Structural Ceramics
Shot peening is commonly used to modify material surface layers and improve the strength of metal components. As it occurred the same technique can be applied for brittle ceramics. High compressive stresses up to 2.4 GPa were introduced into near surface region of alumina and zirconia ceramics by ul...
Saved in:
Published in: | Key engineering materials 2006-01, Vol.317-318, p.277-280 |
---|---|
Main Authors: | , , , , |
Format: | Article |
Language: | English |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Summary: | Shot peening is commonly used to modify material surface layers and improve the
strength of metal components. As it occurred the same technique can be applied for brittle ceramics.
High compressive stresses up to 2.4 GPa were introduced into near surface region of alumina and
zirconia ceramics by ultrasonic shot peening maintaining its surface integrity. Dependence between
diameter of tungsten balls, treatment time (at constant mass of balls in the housing and vibration
amplitude) and level of compressive stress introduced was determined for both ceramics with nano
and micrograins. Coarser grained ceramics was found to be more sensible to structural changes
responsible for stress creation than the smaller one. High microplastic deformation in shot peened
surface layer of ceramics was observed by X-ray diffraction. An increase of hardness and surface
resistance to fracture with increasing level of compressive stress was found. |
---|---|
ISSN: | 1013-9826 1662-9795 1662-9795 |
DOI: | 10.4028/www.scientific.net/KEM.317-318.277 |