Hits:

Indexed by:期刊论文

Date of Publication:2011-06-01

Journal:ACTA METALLURGICA SINICA-ENGLISH LETTERS

Included Journals:Scopus、SCIE、EI

Volume:24

Issue:3

Page Number:249-254

ISSN No.:1006-7191

Key Words:Cold gas dynamic spraying; 304 stainless steel coating; Three-point bending test; Fracture behavior; Heat treatment

Abstract:304 stainless steel coating was deposited on the Interstitial-Free steel substrate by cold gas dynamic spraying (CODS). Three-point bending test of the cold sprayed 304 stainless steel coating was tested by SHIMADZU electro-hydraulic servo-controlled fatigue testing machine and the fracture morphology was examined by scanning electron microscopy. The results showed that the fracture behavior of the cold sprayed 304 stainless steel coating was brittleness fracture. The crack in the coating occurred in the interfaces between particles and the crack extended to the internal of the coating with the increase of the load. When the crack has extended to the combination interface between coating and substrate, the crack extended to the two sides. The microstructure and mechanical property of the cold sprayed 304 stainless steel coating have been optimized after heat treatment.