Mechanism of Improving Mechanical and Electrical Properties of Fe40NiCrSiAl Alloy Induced by Laser Shock Wave

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This paper explores the properties of Fe40NiCrSiAl alloy treated by different methods. The hardness, elastic modulus and resistivity are tested. The results indicate that: after LSP to rolled Fe40NiCrSiAl alloy, the hardness increased 25.22%, the elastic modulus increased 7.17% and the resistivity decreased 39%. TEM photographs demonstrated that there appeared dislocations, martensite transformation and twin crystals inside the material after being treated by LSP. Twin crystals are the main reason attributing to the improvement of material electrical properties.

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1177-1181

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October 2011

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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[1] Sanders P G, Eastman J A, Weertma J R. Elastic and tensile behavior of nanocrystalline copper and palladium[J]. Acta Mater. Vol. 45(2007), p.4019.

DOI: 10.1016/s1359-6454(97)00092-x

Google Scholar

[2] Valiev, R. Z; Alexandrov I.V.; Zhu Y.T.; lowe,T.C. Paradox of strength and ductility in metals processed by severe plastic deformation [J]. Journal of Materials Reserch. Vol. 17(2002), p.5.

DOI: 10.1557/jmr.2002.0002

Google Scholar

[3] Lei Lu, Shen Y F, et al. Ultrahigh strength and high electrical conductivity in copper[J]. Science, Vol. 304(2004), p.422.

Google Scholar

[4] Wang Y, Chen M, Zhou F et al. High tensile ductility in a nanostructure metal[J]. Vol. 419(2002), p.912.

Google Scholar

[5] Youngdahl C J, Weertman J R, Hugo R C et al. Deformation behavior in nanocrystalline copper[J]. Scripta Mater. Vol. 44(2001), p.1475.

DOI: 10.1016/s1359-6462(01)00712-6

Google Scholar

[6] L. Lu, M. L. Sui, Lu. Superplastic Extensibility of Nanocrystalline Copper at Room Temperature[J]. SCIENCE. Vol. 287(2002), p.1463.

DOI: 10.1126/science.287.5457.1463

Google Scholar