X-ray diffraction Rietveld analysis of cold worked austenitic stainless steel

• Published in: Materials letters Vol. 67; no. 1; pp. 173 - 176
• Main Authors: Murugesan, S., Kuppusami, P., Mohandas, E., Vijayalakshmi, M.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 15-01-2012
• Subjects: Annealing; Austenitic stainless steels; cold; Cold working; Defects; Diffraction; Dislocation density; Electron density; Fourier analysis; Hardness; Mathematical analysis; Stainless steel; X-ray diffraction; X-ray techniques; Cold working; X-ray techniques; Hardness; Stainless steel; Defects
• ISSN: 0167-577X; 1873-4979
• DOI: 10.1016/j.matlet.2011.09.065

In the present study, the dislocation density of cold worked austenitic stainless steel samples in the range 2–40% was calculated on the basis of Williamson–Smallman approach using modified Rietveld method. Dislocation density has been found to increase significantly with increasing percentage of cold work up to 20%. The dislocation density is found to be 1.8
×
10
11/m
2 for the annealed sample and are 3.6
×
10
15/m
2 and 5.4
×
10
15/m
2 for 20% and 40% cold worked sample, respectively. The effect of cold work on dislocation density, hardness and Fourier electron density of the cold worked samples is discussed in comparison with the annealed sample.
► Dislocation density in cold worked stainless steel using Williamson–Smallman approach. ► Variation in dislocation density as a function of cold work 2–40% cold work. ► Crystallite shape/size and electron density mapping using Rietveld method.