Effect of carrier gas on mechanical properties and fracture behaviour of cold sprayed aluminium coatings

Abstract

Two different coatings of 1100 aluminium were cold sprayed onto similar substrates, using He and He–20N₂ (vol.-%) mixture as carrier gases. Three point bend testing was carried out. The elastic moduli of the coatings were found to be close to each other and the substrate. The He processed coating showed higher fracture strength which was attributed to the higher degree of strain hardening. The He–20N₂ processed coating failed at lower stress owing to its strain relaxed structure. The mode 1 fracture of the coating substrate system was found to be higher for the helium processed coating. The toughness was correlated to the microstructure. The delaminated coating showed a higher degree of brittle failure of the interface for the He processed coating.

Keywords

COLD SPRAYING 1100 ALUMINIUM FRACTURE SURFACE FRACTURE TOUGHNESS THREE POINT BEND TEST ELASTIC MODULUS BRITTLE FRACTURE DELAMINATION NOTCH POROSITY CARRIER GAS SPLATS DISLOCATION PILE UP SUBGRAIN FORMATION

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References

United States Patent 5302414, 1994.

Borchers

, Garner

, Stoltenhoff

and Kreye

: J. Appl. Phys., 2004, 96, (8), 4288–4292.

Van Steenkiste

T. H.

, Smith

J. R.

, Teets

R. E.

, Moleski

J. J.

, Gorkeiwicz

D. W.

, Tyson

R. P.

, Marantz

D. R.

, Kowalsky

K. A.

, Barnett

W. L.

: Surf Coat. Technol, 1999, 111, 62–71.

Bolesta

A. V.

, Fomin

V. M.

, Sharafutdinov

M. R.

and Tolochko

B. P.

: Nucl. Instr. Meth. Phys. Res. A, 2001, 470A, 249–252.

C. J.

, Li

W. Y.

and Wang

Y. Y.

: Surf Coat. Technol., 2005, 198,

Balani

, Laha

, Agarwal

, Karthikeyan

and Munroe

: Surf. Coat. Technol., 2005, 195, 272?279.

Ajdelsztajn

, Zuniga

, Jodoin

, and Lavernia

E. J.

: Surf Coat. Technol., to be published in 2005.

Kang

H. K.

and Kang

S. B.

: Scr. Mater., 2003, 49, 1169–1174.

Kim

H. J.

, Lee

C. H.

and Hwang

S. Y.

: Mater. Sci. Eng. A, 2005 A391, 243?248.,

10.

Grujicic

, Zhao

C. L.

, DeRosset

W. S.

and Helfritch

: Mater. Des., 2004, 25, 681–688.

11.

Assadi

, Gartner

, Stoltenhoff

and Kreye

: Acta Mater., 2003, 51, 4379?4394.

12.

Champagne

, Helfritch

, Leyman

, Lempicki

and Grendahl

: Modell. Simul. Mater. Sci Eng., 2005, 13, 1119–1128.

13.

Grujicic

, Zhao

C. L.

, DeRosset

W. S.

and Helfritch

: Mater. Sci Eng. A, 2004, A368, 222–230.

14.

C. J.

, Li

W. Y.

, Wang

Y. Y.

, Yang

G. J.

and Fukanuma

: Thin Solid Films, 2005, 498, 79–85.

15.

Van Steenkiste

T. H.

, Smith

J. R.

and Teets

R. E.

: Surf Coat. Technol., 2002, 154, 237–252.

16.

Balani

, Agarwal

, Seal

and Karthikeyan

: Scr. Mater., 2005, 53, 845–850.

17.

Dowling

N. E.

: ‘Mechanical behavior of materials: engineering methods for deformation, fracture, and fatigue’, 1st edn, 129, 191–192; 1993, Upper Saddle River, NJ, Prentice Hall.

18.

Guess

T. R.

, Reedy

E. D.

and Stavig

: ‘Mechanical properties of hysol EA-9394 structural adhesive’, Sandia Report SAND95-0229.UC-704, Albuquerque, NM, USA, 1995.

19.

Davis

J. R.

(ed.): ‘ASM specialty handbook: aluminium and aluminium alloys’; 1993, Materials Park, OH, ASM International.