Effect of microstructure on the mechanical properties and fracture of

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Effect of microstructure on the mechanical properties and fracture of commercial hypoeutectic Al-Si alloy modified with Na, Sb and Sr Journal of Materials Science July 1999, Volume 34, Issue 14, pp 3555–3564 | Cite as N. Fatahalla (1) M. Hafiz (1) M. Abdulkhalek (2) 1. Mechanical Department, Faculty of Engineering,, Al Azhar University, Nasr City,, Cairo,, Egypt ( 2. Industrial Engineering Company for Construction and Development (ICON),, Cairo,, Egypt Article 728 Downloads 36 Citations

Abstract The microstructure, hardness, tensile properties and fracture have been studied for the non-modified and modified aluminium (Al) silicon (Si) commercial hypoeutectic alloy. Three modifiers were used being sodium (Na), antimony (Sb) and strontium (Sr). The Sb-modified structure revealed small plate-like Si morphology. The Na and Sr-modified structures exhibited fibrous Si. A slight increase in the hardness values (HV) due to modification was observed. A general increase in the tensile properties was observed due to modification. The tensile properties of the sand mould Srmodified alloy were significantly higher than those of the Na-modified alloy by 12.7% in proof stress, 16.3% in ductility and 33.3% in toughness. For the metal mould ingots the increase in tensile properties of Sr-modified alloy were respectively: 16.7%, 32.5% and 41.7% compared to a Na-modified alloy. Optical fractography on longitudinal sections near the fracture surfaces of the modified alloys revealed that the crack propagates in the eutectic thus, circumventing the Al-dendrites. The dimple and smooth ripple patterns observed by scanning electron microscope (SEM) on the fracture surface of the Na and Sr-modified alloys suggest a transgranular type of fracture across the grains of the eutectic matrix. This is a preview of subscription content, log in to check access

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References 1.

ASIM, Metals Handbook (Metals Park, Ohio, USA, 1948). Google Scholar (http://scholar.google.com/scholar_lookup?title=Metals%20Handbook&publication_year=1948)

2.

J. Jorstad, AFS Trans. 92 (1984) 573. Google Scholar (http://scholar.google.com/scholar_lookup? &author=J..%20Jorstad&journal=AFS%20Trans&volume=92&pages=573&publication_year=1984)

3.

B. Thall and B. Chalmers, J. Inst. Met. 77 (1950) 79. Google Scholar (http://scholar.google.com/scholar_lookup? &author=B..%20Thall&author=B..%20Chalmers&journal=J.%20Inst.%20Met&volume=77&pages=79&publication_year=1950)

4.

B. Gunther and H. Jurgens, Giessesrel 67(1) (1980) 8. Google Scholar (http://scholar.google.com/scholar_lookup? &author=B..%20Gunther&author=H..%20Jurgens&journal=Giessesrel&volume=67&issue=1&pages=8&publication_year=1980)

5.

K. Radhakrishna, Indian Foundry J. 29 (1983) 115. Google Scholar (http://scholar.google.com/scholar_lookup? &author=K..%20Radhakrishna&journal=Indian%20Foundry%20J&volume=29&pages=115&publication_year=1983)

6.

M. Giglotti, Metall. Trans. 3 (1972) 933. Google Scholar (http://scholar.google.com/scholar_lookup? &author=M..%20Giglotti&journal=Metall.%20Trans.&volume=3&pages=933&publication_year=1972)

7.

P. Hess and E. Blackumun, AFS Trans. 83 (1975) 87. Google Scholar (http://scholar.google.com/scholar_lookup? &author=P..%20Hess&author=E..%20Blackumun&journal=AFS%20Trans.&volume=83&pages=87&publication_year=1975)

8.

J. Charbonnier, AFS Int. Cast Met. J. 4 (1979) 39. Google Scholar (http://scholar.google.com/scholar_lookup? &author=J..%20Charbonnier&journal=AFS%20Int.%20Cast%20Met.%20J&volume=4&pages=39&publication_year=1979)

9.

S. Holecek and A. Brandejs, Slevarents. 1 (1979) 28. Google Scholar (http://scholar.google.com/scholar_lookup? &author=S..%20Holecek&author=A..%20Brandejs&journal=Slevarents&volume=1&pages=28&publication_year=1979)

10.

N. Garat, Rev. Aluminium. 49 (1979) 499. Google Scholar (http://scholar.google.com/scholar_lookup? &author=N..%20Garat&journal=Rev.%20Aluminium&volume=49&pages=499&publication_year=1979)

11.

Q. Nagel and R. Portalier, AFS Int. Cast Metals J. 5(1980) 2. Google Scholar (http://scholar.google.com/scholar_lookup? &author=Q..%20Nagel&author=R..%20Portalier&journal=AFS%20Int.%20Cast%20Metals%20J&volume=5&pages=2&publication_year=19 80)

12.

A. Telli and S. Kisakurek, Scripta Metall. 20 (1986) 1657. Google Scholar (http://scholar.google.com/scholar_lookup? &author=A..%20Telli&author=S..%20Kisakurek&journal=Scripta%20Metall&volume=20&pages=1657&publication_year=1986)

13.

M. Haque, Met. Forum. 6 (1983) 54. Google Scholar (http://scholar.google.com/scholar_lookup? &author=M..%20Haque&journal=Met.%20Forum&volume=6&pages=54&publication_year=1983)

14.

Idem., Foundry Trade. J. 24 (1983) 387. Google Scholar (http://scholar.google.com/scholar_lookup? &author=M..%20Haque&journal=Foundry%20Trade.%20J&volume=24&pages=387&publication_year=1983)

15.

B. Closset and J. Gruzleski, Metall. Trans. 13A (1982) 945. Google Scholar (http://scholar.google.com/scholar_lookup? &author=B..%20Closset&author=J..%20Gruzleski&journal=Metall.%20Trans&volume=13A&pages=945&publication_year=1982)

16.

N. Fatahalla, in Proc. of the 3rd Int. Conf. Cairo Univ., Cairo, Egypt, Dec. 28–30, 1985, edited by S. Bayoumi (Pergamon Press, 1985) p. 239. Google Scholar (http://scholar.google.com/scholar? q=%0AN.%20Fatahalla%2C%20in%20Proc.%20of%20the%203rd%20Int.%20Conf.%20Cairo%20Univ.%2C%20Cairo%2C%20Egypt%2C %20Dec.%2028%E2%80%9330%2C%201985%2C%20edited%20by%20S.%20Bayoumi%20%28Pergamon%20Press%2C%201985%29% 20p.%20239.)

17.

N. Fatahalla, J. Mater. Sci. 22 (1987) 1013. Google Scholar (http://scholar.google.com/scholar_lookup? &author=N..%20Fatahalla&journal=J.%20Mater.%20Sci&volume=22&pages=1013&publication_year=1987)

18.

Idem., in Proc. of the 5th Int. Conf. on Mech. Behaviour of Mater., Beijin, China, 2, June 3–6, 1987, Vol. 2, p. 1419. Google Scholar (http://scholar.google.com/scholar? q=%0AIdem.%2C%20in%20Proc.%20of%20the%205th%20Int.%20Conf.%20on%20Mech.%20Behaviour%20of%20Mater.%2C%20Beijin %2C%20China%2C%202%2C%20June%203%E2%80%936%2C%201987%2C%20Vol.%202%2C%20p.%201419.)

19.

N. Fatahalla, P. Secordel and M. Suery, J. Mater. Sci. 23 (1988) 2419. Google Scholar (http://scholar.google.com/scholar_lookup? &author=N..%20Fatahalla&author=P..%20Secordel&author=M..%20Suery&journal=J.%20Mater.%20Sci&volume=23&pages=2419&publica tion_year=1988)

20.

M. Hafiz, T. Kobayashi and N. Fatahalla, Cast Metals J. 7 (1994) 103. Google Scholar (http://scholar.google.com/scholar_lookup? &author=M..%20Hafiz&author=T..%20Kobayashi&author=N..%20Fatahalla&journal=Cast%20Metals%20J&volume=7&pages=103&public ation_year=1994)

21.

N. Fatahalla, "A Treatise on Materials Sci. and Eng.," (Al Ahram, Cairo, Egypt, 1995). Google Scholar (http://scholar.google.com/scholar_lookup? title=A%20Treatise%20on%20Materials%20Sci.%20and%20Eng.&author=N..%20Fatahalla&publication_year=1995)

22.

M. Hafiz and T. Kobayashi, Trans. J. Foundrymen's Society. 1 (1993) 115. Google Scholar (http://scholar.google.com/scholar_lookup? &author=M..%20Hafiz&author=T..%20Kobayashi&journal=Trans.%20J.%20Foundrymen%27s%20Society&volume=1&pages=115&publica tion_year=1993)

23.

Idem., Scripta Metall. et Mater. 31 (1994) 701. Google Scholar (http://scholar.google.com/scholar_lookup? &author=M..%20Hafiz&author=T..%20Kobayashi&journal=Scripta%20Metall.%20et%20Mater&volume=31&pages=701&publication_year =1994)

24.

M. Hafiz, N. Fatahalla and S. Bahi, Z. Metallkde. 81 (1990) 75. Google Scholar (http://scholar.google.com/scholar_lookup? &author=M..%20Hafiz&author=N..%20Fatahalla&author=S..%20Bahi&journal=Z.%20Metallkde&volume=81&pages=75&publication_year =1990)

25.

N. Fatahalla, J. Mater. Sci. 25 (1990) 3396. Google Scholar (http://scholar.google.com/scholar_lookup? &author=N..%20Fatahalla&journal=J.%20Mater.%20Sci&volume=25&pages=3396&publication_year=1990)

26.

Idem., J. Mater. Sci. 24 (1989) 2488. Google Scholar (http://scholar.google.com/scholar_lookup? &author=N..%20Fatahalla&journal=J.%20Mater.%20Sci&volume=24&pages=2488&publication_year=1989)

27.

M. Hafiz, N. Fatahalla and S. Bahi, in Proc. of the 2nd Int. Conf. Ain Shams Univ. on Production Eng. and Design for Development, Cairo, Egypt, Dec. 29–31, 1987, Vol. 2, p. 277. Google Scholar (http://scholar.google.com/scholar_lookup? &author=M..%20Hafiz&author=N..%20Fatahalla&author=S..%20Bahi&journal=Proc.%20of%20the%202nd%20Int.%20Conf.%20Ain%20S hams%20Univ&volume=2&pages=277&publication_year=1987)

28.

ASM, Metals Handbook (Metals Park, Ohio, USA. 7, 1972) p. 241. Google Scholar (http://scholar.google.com/scholar_lookup?title=Metals%20Handbook&publication_year=1972)

29.

Idem., (Metals Park, Ohio, USA. 9, 1985) p. 123. Google Scholar (http://scholar.google.com/scholar_lookup?title=Metals%20Handbook&publication_year=1985)

30.

S. Spear and G. Gardner, AFS Trans. 71 (1963) 209. Google Scholar (http://scholar.google.com/scholar_lookup? &author=S..%20Spear&author=G..%20Gardner&journal=AFS%20Trans&volume=71&pages=209&publication_year=1963)

31.

G. Sigworth, ibid. 91 (1983) 7. Google Scholar (http://scholar.google.com/scholar_lookup? &author=G..%20Sigworth&journal=AFS%20Trans&volume=91&pages=7&publication_year=1983)

32.

B. Gallois and G. Sigworth, in Proc. of the AFACMI Conf., USA, Dec. 11–12, 1984, p. 101. Google Scholar (http://scholar.google.com/scholar? q=%0AB.%20Gallois%20and%20G.%20Sigworth%2C%20in%20Proc.%20of%20the%20AFACMI%20Conf.%2C%20USA%2C%20Dec.%2 011%E2%80%9312%2C%201984%2C%20p.%20101.)

33.

A. Hellawell, "Progress in Mater. Sci.," (Pergamon Press, 15, 1970) p. 3. Google Scholar (http://scholar.google.com/scholar_lookup? &author=A..%20Hellawell&journal=Progress%20in%20Mater.%20Sci&volume=15&pages=3&publication_year=1970)

34.

V. Rauta, in Proc. of the 2nd Int. Conf. on Molten Aluminium (AFS, 5, 1966) p. 396. Google Scholar (http://scholar.google.com/scholar_lookup? &author=V..%20Rauta&journal=Proc.%20of%20the%202nd%20Int.%20Conf.%20on%20Molten%20Aluminium&volume=5&pages=396& publication_year=1966)

35.

D. Granger, R. Sawtell and M. Kersker, AFS Trans. 92 (1984) 579. Google Scholar (http://scholar.google.com/scholar_lookup? &author=D..%20Granger&author=R..%20Sawtell&author=M..%20Kersker&journal=AFS%20Trans&volume=92&pages=579&publication_y ear=1984)

36.

W. Laorchan and J. Grusleski, ibid. 100 (1992) 53. Google Scholar (http://scholar.google.com/scholar_lookup? &author=W..%20Laorchan&author=J..%20Grusleski&journal=AFS%20Trans&volume=100&pages=53&publication_year=1992)

37.

A. Hellawell, "Progress in Mater. Sci.," (Pergamon Press, 22, 1977) p. 1. Google Scholar (http://scholar.google.com/scholar_lookup? &author=A..%20Hellawell&journal=Progress%20in%20Mater.%20Sci.&volume=22&pages=1&publication_year=1977)

38.

L. MOndolfo, "Aluminm Alloys: Structure and Properties," (Butterworth, England, 1976) p. 767. Google Scholar (http://scholar.google.com/scholar_lookup? title=Aluminm%20Alloys%3A%20Structure%20and%20Properties&author=L..%20MOndolfo&publication_year=1976)

Copyright information © Kluwer Academic Publishers 1999

About this article Cite this article as: Fatahalla, N., Hafiz, M. & Abdulkhalek, M. Journal of Materials Science (1999) 34: 3555. http://doi.org/10.1023/A:1004626425326 DOI (Digital Object Identifier) http://doi.org/10.1023/A:1004626425326 Publisher Name Kluwer Academic Publishers Print ISSN 0022-2461 Online ISSN 1573-4803 About this journal Reprints and Permissions

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Effect of microstructure on the mechanical properties and fracture of

Effect of microstructure on the mechanical properties and fracture of commercial hypoeutectic Al-Si alloy modified with Na, Sb and Sr Journal of Mater...

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