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Indexed by:期刊论文

Date of Publication:2012-03-01

Journal:JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL

Included Journals:SCIE、Scopus

Volume:19

Issue:3

Page Number:73-78

ISSN No.:1006-706X

Key Words:cold gas dynamic spraying; 304 stainless steel coating; three-point bend testing; compound beam theory; elastic modulus

Abstract:304 stainless steel coating was deposited on the IF steel substrate by cold gas dynamic spraying (CGDS), and the elastic modulus of the 304 stainless steel coating was studied. The elastic modulus of cold sprayed 304 stainless steel coating was measured using the three-point bend testing and the compound beam theory, and the other mechanic parameters (such as the equivalent flexural rigidity and the moment of inertia of area) of the coatings were also calculated using this compound beam theory. It is found that the calculated results using the above methods are accurate and reliable. The elastic modulus value of the cold sprayed 304 stainless steel coating is 1. 179 X 10(5) MPa, and it is slightly lower than the 304 stainless steel plate (about 2 X 10(5) MPa). It indicates that the elastic modulus of the cold sprayed coatings was quite different from the comparable bulk materials. The main reason is that the pores and other defects are existed in the coatings, and the elastic modulus of the coatings also depends on varies parameters such as the feed stock particle size, porosity, and processing parameters.