Charpy toughness and microstructure of vibrated weld metal

Abstract

Vibration during welding can be used to obtain certain changes in mechanical properties of weld metal. Research work on the influence of vibration on the secondary microstructure of welds and hence on the Charpy toughness was performed. Vibration during welding exhibits positive effects on the microstructure constituent formation. Multipass welding was simulated with reheating of the original single pass weld in order to obtain similar microstructure to multipass welds. Microstructures were examined with an optical microscope. Additionally, fractographic examination of the rupture of Charpy specimens was performed. Changes in the microstructure according to vibration were observed which affect toughness of the weld metal. Vibration during welding was rated more effective in the case of reheating the weld metal, which is the case in multipass welding.

Keywords

WELDING VIBRATION TOUGHNESS MICROSTRUCTURE FERRITE WELD METAL

Get full access to this article

View all access options for this article.

References

Pučko

: ‘Influence of vibrational stabilization during welding and after welding on weld metal properties’, Master degree dissertation, University of Maribor, Slovenia, 1999.

Pučko

and Gliha

: Sci. Technol. Weld. Join., 2005, 10, (3), 335–338.

Claxton

R. A.

: Weid. Rev.

Claxton

R. A.

: Heat Treat. Met., 1991, 2, 53–59.

Claxton

R. A.

: Metaiiurgia, 1999, 66, (5), 49.

Weidner

C. W.

: ‘A study of the effects of low frequency mechanical vibration during welding on the resulting residual stresses and microstructure’, 88–94; 1967, Columbus, OH, The Ohio State University.

Freedman

A. H.

and Wallace

J. F.

: Trans. Am. Foundryman's Soc., 1957, 65, 127–129.

Garlick

R. G.

and Wallace

J. F.

: Trans. Am. Foundryman's Soc., 1959, 67.

Fisher

T. P.

: British Foundryman, 1973, 66, (3).

10.

Crawmer

G. R.

: ‘The effect of sonic or ultrasonic vibration of a consumable electrode during arc welding’, PhD thesis, Ohio State University, Columbus, OH, USA, 1965.

11.

Hebel

and Kreis

: Metall., 1988, 259–261.

12.

Tewari

S. P.

and Shanker

: ISIJ Int., 1993, 33, (12), 1265–1269.

13.

X. W.

, Li

, Chandel

R. S.

and Seov

H. P.

: J. Mater. Sci. Lett., 1999, 18, 1615–1617.

14.

: Scr. Mater., 2000, 42, (7), 661–665.

15.

Hebel

A. G.

: Metal Prog., 1985, 51–54.

16.

Munsi

A. S. M. Y.

, Waddell

A. J.

and Walker

C. A.

: J. Mater., 2001, 215, (2), 99–111.

17.

Bhadeshia

H. K. D. H.

: Math. Model. Weld Phenom., 1995, 2.

18.

Starkey

J. P.

: ‘The effect of vibratory stress relief on metal fatigue in steel weldments’, Master degree thesis, Central Missouri State University, Warrensburg, MO, USA, 1987.

19.

Klauba

B. B.

and Adams

C. M.

: Proc. Conf. on ‘Productive applications of mechanical vibrations’, Phoenix, AZ, USA, 1982, ASME, 47–58.

20.

Prohaszka

, Hidasi

and Varga

: Period. Polytech., 1975, 19, 69–78.

21.

Kalna

: ‘Influence of mechanical treatment on properties of welded joints’, IIW Doc. X-1270–93, International Institute of Welding, Copenhagen, Denmark, 1993.

22.

Havas

and Csoboly

: Maschinenbautechnik, 1979, 28, (4), 173174.

23.

‘Plates and wide flats made of high yield strength structural steels in the quenched and tempered or precipitation hardened conditions, part 2: delivery conditions for quenched and tempered steels’, EN standard 10137–2, 1995.

24.

‘Guidelines for classification of ferritic steel weld metal microstructural constituents using the light microscope’, IIW Doc . No. IX-1377–85, International Institute of Welding, Copenhagen, Denmark, 1985, 144–148.

25.

Linnert

G. E.

: ‘Welding metallurgy carbon and alloy steels’, 4th edn; 1994, Hilton Head Island, SC, GML Publication.

26.

Honeycombe

R. W. K.

and Bhadeshia

H. K. D. H.

: ‘Steels: microstructure and properties’, 2nd edn; 1995, London, Edward Arnold.

27.

Matsuda

, Fukada

, Okada

, Ikeuchi

, Horii

, Shiwaku

and Suzuki

: Weld. World, 1996, 37, (3).

28.

Horii

, Ohkita

and Wakabayashi

: Proc. 1st Pacific/Asia Offshore Mechanics Symp., Seoul, Korea, June 1990, International Society of Offshore and Polar Engineers, 103–107.