Record number :
1183569
Title of article :
Investigation of water cavitation peening-induced microstructures in the near-surface layer of pure titanium
Author/Authors :
D.Y. Ju، نويسنده , , B. Han، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2009
Pages :
6
From page :
4789
To page :
4794
Abstract :
The influence of water cavitation peening (WCP) treatment on the microstructure of pure titanium was investigated. The microstructural evolution in the near-surface of pure titanium as a function of WCP time was characterized by X-ray diffraction (XRD), optical microscopy (OM), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). After WCP treatment, changes in the microstructure, as well as residual stress and surface morphologies as functions of WCP time, were recorded using a novel experimental design involving an in situ observation function. The obtained results indicate that twinning plays an important role in the plastic deformation and residual stresses of hexagonal close-packed (HCP) structured metal materials, and therein, that the deformation twinning and twinning interaction were induced by WCP in the strengthening layer. A stable compressive residual stress layer was found in the near-surface of the investigated pure titanium.
Keywords :
Residual stress , Microstructures , Water cavitation peening , X-ray diffraction
Journal title :
Journal of Materials Processing Technology
Link To Document :