Influence of milling media on the microstructure and mechanical properties of mechanically milled and sintered aluminium
Source abstract
Abstract
Mechanically alloyed aluminium powder was prepared by vacuum attrition milling. Two types of milling balls (steel or hard-metal balls) were employed. Powder consolidation was carried out by cold pressing and vacuum sintering. The microstructure of consolidated samples obtained from powder milled with steel balls shows needle-shaped Al-Fe intermetallics. This acicular morphology is responsible for the low elongation (1%) of these samples. However, specimens manufactured from powder milled with hard-metal balls show a different microstructure. The powder is contaminated by WC and Co, coming from the milling balls. These contaminants change the size (smaller) and the shape (spheroidal) of the intermetallics. This results in a remarkable increase in elongation (4%), without reduction in tensile strength (ca. 300 MPa).
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Research context
OpenAlex topics: Aluminum Alloys Composites Properties · Advanced materials and composites · Powder Metallurgy Techniques and Materials
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References (24)
Show source-provided references
1. C. C. KOCH, Ann. Rev. Mater. Sci. 19 (1989) 121.10.1146/annurev.ms.19.080189.001005 ↗
2. L. LÜ and M. O. LAI, in “Mechanical Alloying” (Kluwer Academic Publishers, Boston, MA, 1998).10.1007/978-1-4615-5509-4 ↗
3. H. BAKKER, C. F. ZHOU and H. YANG, Prog. Mater. Sci. 39 (1995) 159.10.1016/0079-6425(95)00001-1 ↗
4. C. SURYANARAYANA, ibid. 46 (2001) 1.10.1016/S0079-6425(99)00010-9 ↗
5. KYOUNG IL MOON and KYUNG SUB LEE, J. Alloys Comp. 333 (1/2) (2002) 249.10.1016/S0925-8388(01)01731-5 ↗
6. J. A. RODRIGUEZ, J. M. GALLARDO and E. J. HERRERA, J. Mat. Sci. 32 (1997) 3535.10.1023/A:1018653607670 ↗
7. J. L. HERRERO, J. A. RODRÍGUEZ and E. J. HERRERA, in Proceedings of the 1998 Powder Metallurgy World Congress, Granada, October, 1998 (EPMA, Bellstone, Shrewsbury, UK, 1998), Vol. 1, p. 384.
8. R. F. SINGER, W. C. OLIVER and W. D. NIX, Metall. Trans. A 11 (1980) 1895.10.1007/BF02655106 ↗
9. G. B. SCHAFFER and P. G. MCCORMICK, ibid. 23 (1992) 1285.10.1007/BF02665060 ↗
10. G. B. SCHAFFER and J. S. FORRESTER, J. Mat. Sci. 32(1997) 3157.10.1023/A:1018646616814 ↗
11. H. ZHANG and X. LIU, Int. J. Refr. Met. Hard Mat. 19 (2001) 203.10.1016/S0263-4368(01)00050-6 ↗
12. H. J. RYU, S. H. HONG and W. H. BAEK, J. Mat. Process. Techn. 63 (1997) 292.10.1016/S0924-0136(96)02638-6 ↗
13. Y. H. PARK, H. HASHIMOTO and R. WATANABE, Mat. Sci. Forum 88–90 (1992) 59.10.4028/www.scientific.net/MSF.88-90.59 ↗
14. M. NARANJO, J. A. RODRIGUEZ and E. J. HERRERA, Scr. Mater. 49 (2003) 65.10.1016/S1359-6462(03)00179-9 ↗
15. W. T. NACHTRAB and P. R. ROBERST, in “Advances in Powder Metallurgy and Particulate Materials” (MPIF, Princeton, NJ, USA 1992), Vol. 4, p. 321.
16. J. A. RODRÍGUEZ, J. M. GALLARDO and E. J. HERRERA, Mater. Trans. JIM 36 (1995) 312.10.2320/matertrans1989.36.312 ↗
17. J. J. FUENTES, J. A. RODRÍGUEZ and E. J. HERRERA, Mater. Sci. Forum 426–432 (2003) 4331.10.4028/www.scientific.net/MSF.426-432.4331 ↗
18. “Tension Test Specimens for Pressed and Sintered Metal Powders,” MPIF Standard 10, Metal Powder Industries Federation (Princeton, NJ, USA, 1963).
19. “Mechanical Testing of Steel Products,” ASTM Standard Method A 370, American Society for Testing and Materials (Philadelphia, Pa, USA, 1997).
20. F. MONDOLFO, in “Aluminium Alloys: Structure and Properties” (Butterworths, London, UK, 1976) p. 282.10.1016/B978-0-408-70932-3.50036-X ↗
21. J. A. RODRÍGUEZ, J. CINTAS, J. M. GALLARDO and E. J. HERRERA, Anales de Mecánica de la Fractura 16 (1999) 407.
22. H. KOCH, U. HIELSCHER, H. STERNAU and A. FRANKE, in Proceedings of the TMS annual meeting, Las Vegas, February, 1995 (TMS, Warrendale, Pennsylvania, USA, 1995) p. 1011.
23. “Aluminium: Properties and Physical Metallurgy,” edited by J. E. Hatch (ASM, Metals Park, Ohio, USA, 1984) p. 64, 226, 234, 348.
24. T. ROSENQVIST, in “Principles of Extractive Metallurgy” (McGraw-Hill, New York, USA, 1974) p. 527.