Main Article Content
There have been very few reports describing the free machining lead free aluminum alloys containing minimal amounts of tin and indium melt spun process. Our paper describes the effect of fundamental factors on the machinability of free machining lead free aluminum alloys rapidly solidified from melt. Structural and thermal properties have been investigated by x-ray diffraction (XRD) and differential scanning calorimetry (DSC) techniques. Tensile test machine used in studies the mechanical properties such as ultimate tensile strength, elastic constants, yield strength and critical shear stress for Al-Zn-Sn-In alloys. It is noticed that mechanical and thermal properties attributed to fine grained structure, reduced levels of segregation and presence of new intermetallic compounds (IMC) such as AlZn and SnZn due to high casting rate by rapid solidification processes. The determination of mechanical properties was suggested to be attributed to the gradual increase of α-Al crystals. We evaluated the tensile properties using tensile test machine of the melt-spun ribbons at varied stress-strain rates to determine the underlying deformation mechanisms .Critical shear stress (CSS) was also calculated .It was found that it is equal to 9.29 GPa for annealed ribbons at 262 0C for 9 hrs. The results showed that several combination of tensile strength ,yield strength ,elastic moduli can be generated from Al- 0.1wt% Zn-1.5 wt% Sn- 1.63 wt% In alloys before and after heat treatment at (262 0C for 3,6,9 hrs) to meet the needs of free machining aluminum alloy applications.
This work is licensed under a Creative Commons Attribution 4.0 International License.
Authors retain the copyright of their manuscripts, and all Open Access articles are distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided that the original work is properly cited.
The use of general descriptive names, trade names, trademarks, and so forth in this publication, even if not specifically identified, does not imply that these names are not protected by the relevant laws and regulations. The submitting author is responsible for securing any permissions needed for the reuse of copyrighted materials included in the manuscript.
While the advice and information in this journal are believed to be true and accurate on the date of its going to press, neither the authors, the editors, nor the publisher can accept any legal responsibility for any errors or omissions that may be made. The publisher makes no warranty, express or implied, with respect to the material contained herein.
 Bothroyd, G., fundamentals of machining and machine tools, scripta book co. , Washington , DC , (1975).
 free –cutting alluminium alloy ,with Sn as substitution for lead ,S.Koch and H.Antrekowitsch ,278-281 , BHM, 153.Jg. (2008) Heft 7.
 Smolej,A. , B.Bresk Var , M.Sokovis , V.Dragojevic ,E.Slacck and T.Smoral , properties of alluminium free-cutting alloys within , part 1 . Alluminium 78 (2002) 4 , 284-288.
 Johne , D. , handbuch der alluminium zerspanung , alluminuim-verlag , Dϋsseldorf (1984).
 Sircar and S.Subhasish ,free machining alluminium alloy containing bismuth or bismuth-tin for free machining and a method of use,Reynolds metal company,Richmond,VA,US patent no 6 409 966,(2002).
 Zoller , H. ,G.Enzler and J.C.Fornerod , ϋber die zerspanbarkeit von alluminium legieerungen , alluminium 45 (1969) 1 , 49-54 .
 Johne , P. , sparen von alluminium wek-sotoffen , alluminium 56(1980)6 , 413-417 .
 Trend , E.M., and R.K.Wright ,metal cutting –fourth edition , Batterworth Hiene –man , Woburn (2000).
 Edwards , B.J., and G.D.ScoH , alcoa`s ultra-alloy 6020, A lead free alluminium alloy with A-rated machinability ideal suited for precision machined parts . Alcoa (2004).
 R.J. M. Kamal, J. c. Pieri, Memories et Etudes scientifiqes Revue de Metallurgie-Mars, (1983) 143–148.
 Y.H.Zhu,Mater.Trans.45 , 3038 (2004).
 Y.A.GELLER and A.G.RAKHSHTADT, "Science of materials",Sci.Mater , vol.138 ,pp.138-141 ,1977.
 P. Duwez, R.H. Willens, W. Klement, Continuous Series of Metastable Solid Solutions in Silver-Copper Alloys, J. Appl. Phys. 31 (1960) 1136.
 A.J. R. Manaila, F. Zavaliche, R. Popescu, D. Macovei, A. Devenyi, C. Bunescu, E. Vasile, No Title, Mater. Sci. Eng. A 226-228 (1997) 290–295.
 F.Q.Zu , Z.G.Zhu , B.Zhang , Y.Fengand and J.P.Schui , J.Phys. condens.matter 13(2001) 11435-11442.
 M.Yan ,W.Z.Zhu , B.Cantor , the microstructure of as-melt spun Al-7% Si-0.3% Mg alloy and its variation , continuous heat treatment , mater, Sci , Eng, A. , 284 (2000) ,77-83.
 O.Uzun , T.Karaaslan , M.Gogebakan , M.Keshin , Hardness and microstructural characteristics of rapidly solidified Al-8-16wt% Si alloy , J. , alloys comp. , 376 (2004), 149-157.