FIZIKA A 19 (2010) 4 , 165-170

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A NEW METHOD FOR DETERMINATION OF STACKING FAULT ENERGY OF PURE METALS BY X-RAY DIFFRACTION

PARTHA CHATTERJEEa and SOME NATH DEYb
aDepartment of Physics & Electronics, Vivekananda Mahavidyalaya, Haripal,
Hooghly 712 405, West Bengal, India
bDepartment of Physics, Haldia Govt. College, Haldia, Midnapore East-721657,
West Bengal, India
Dedicated to the memory of Late Professor S. P. Sen Gupta
Ex-Head, Department of Materials Science, Indian Association
for the Cultivation of Science, Jadavpur, Kolkata 700 032, India

Received 4 November 2009    Accepted 16 February 2011    Online 7 March 2011

An indirect method for the determination of stacking fault energies (SFE) of pure metals by X-ray diffraction technique is reported. The existing methods for the calculation of SFE suffer from simplified assumptions regarding dislocation distribution and type of dislocation present in the specimen. The present method is based on the strain field model of dislocations assuming a restrictedly random dislocation distribution. The method is applied for the calculation of SFE of plastically deformed copper and the values come out to be very close to those obtained from direct observation methods like TEM.

PACS numbers: 61.72.Dd , 61.72Nn, 61.05cp , 81.05Bx
UDC 539.26, 539.374

Keywords: X-ray diffraction, stacking faults, dislocations

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