Abstract
The lattice thermal expansion characteristics of Inconel-600 ® have been studied by high temperature X-ray diffraction (HT-XRD) technique in the temperature range 298–1200 K. Altogether four experimental runs were conducted on thin foils of about 75–100 μm thickness. The diffraction profiles have been accurately calibrated to offset the shift in 2 θ values introduced by sample buckling at elevated temperatures. The corrected lattice parameter data have been used to estimate the instantaneous and mean linear thermal expansion coefficients as a function of temperature. The thermal expansion values estimated in the present study show a fair degree of agreement with other existing dilatometer based bulk thermal expansion estimates. The lattice parameter for this alloy at 300 K is found to be 0.3549(1) nm. The mean linear thermal expansivity is found to be 11.4 × 10 −6 K −1.
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