High Energy Shot Peening of Commercially Pure Titanium TIG Weld Joint

Abstract:

Commercially pure Titanium (CP-Ti) TIG weld joint was treated by means of high energy shot peening (HESP) using a shot peening equipment commonly used in industry. The nanostructured surface layer was characterized by XRD, TEM, SEM and Microhardometer. The results showed that surface nanocrystallization of CP-Ti TIG weld joint were realized by high energy shot peening treatment. The finest grain size in the top surface layer is about 40nm. The hardness of the surface layer is enhanced significantly after shot peening compared with that of the as-welded joint, which resulted in a remarkable surface hardening effect. Surface welded defects such as air pores are eliminated successfully so that relative uniform surface layer was obtained.

• Periodical: Advanced Materials Research (Volumes 148-149)
• Pages: 659-663
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.148-149.659
• Online since: October 2010
• Authors: Chun Huan Chen, Rui Ming Ren
• Keywords: Commercially Pure Titanium, Surface Nanocrystallization (SNC), TIG Joint

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