Acta Metall Sin  1997, Vol. 33 Issue (2): 198-206    DOI:

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INVESTIGATION OF THE DISLOCATION STRUCTURE IN HCP SINGLE CRYSTALS BY MEANS OF THE ROCKING CRYSTAL METHOD

Y.Hao and G.Petzow (Max-Planck-Institut fur Metallforschung; Institut fur Werkstoffwissenschaft; Pulverme-tallurgisches Laboratiorium; Heisenbergstr. 5; 70569 Stuttgart; Germany)F.Mucklich (Institute fur Werkstoffwissenschaftern Universitat des Saarlandes; 66041 Saarbrucken)

Y.Hao and G.Petzow (Max-Planck-Institut fur Metallforschung; Institut fur Werkstoffwissenschaft; Pulverme-tallurgisches Laboratiorium; Heisenbergstr. 5; 70569 Stuttgart; Germany)F.Mucklich (Institute fur Werkstoffwissenschaftern Universitat des Saarlandes; 66041 Saarbrucken). INVESTIGATION OF THE DISLOCATION STRUCTURE IN HCP SINGLE CRYSTALS BY MEANS OF THE ROCKING CRYSTAL METHOD. Acta Metall Sin, 1997, 33(2): 198-206.

Abstract References Related Articles Recommended Metrics Download:  PDF(1202KB)  Export:  BibTeX | EndNote (RIS)       Abstract  A single crystal contains a large number of dislocations after its growth, which can give rise to deflection and distortion of the crystal lattice. In this study the disloctaion struc-ture of hcp single crystals was investigated by means of the rocking crystal method.The theoretical calculation is based on the Krivoglaz model which was developed fromthe kinematic diffraction theory. Beryllium single crystals. due to their excellent opticalproperties as X-ray monochromators. were chosen as a specimen and their rockingcurves were investigated. The dislocations generated on different glide systems- for ex-ample basal and prismatic dislocations. contribute differently to each reflection. There-fore by studying the rocking curves of different reflections it is possible to determinethe dislocation structure within the crystal This is of great imprortance in developingthe crystal monochromators. which usually require tailored dislocation structures byoptimising the growth and heat treatment conditions. Key words:  Be single crystal. X-ray monochromator      rocking crystal method      dis-location structure      Received:  18 February 1997      Service E-mail this article Add to citation manager E-mail Alert RSS （） Articles by authors URL:  https://www.ams.org.cn/EN/     OR     https://www.ams.org.cn/EN/Y1997/V33/I2/198 1 M.Wilkens, Phys.Status.Solidi.(a) 2 (1970) 359. 2 M.V.Laue, Xray Interkrence (Akademische Verlagsgesellschaft, Leipzig, 1941 ). 3 P.Klimanek, in Annual Reporl 1986 on Nuclear Physics and Applications. ZfK-Publ. 621, ZfKRossendorf 1987. 4 M.A.Krivoglaz and K.P.Ryaboshshapka, Fiz. Met. Metalloved 15 (1963) 18. 5 M.A.Krivoglaz, K.P.Ryaboshshapka and R.I.Barabash, Fis. Met. Metalloved 30 (1970) 1134. 6 O.N.Grigoryev, K.P.Ryaboshapka and N.A.Stel'mashenko, Fiz. Met. Metalloved 67 (1989) 311. 7 R.I.Barabash, M.A.Krivoglaz and K.P.Ryaboshshapka, Fic. Met. Metalloved. 41 (1976) 33. 8 Aldinger and G.Petzow, Beryllium Sci. Technol. 7 (1979) 107. 9 Y.Hao, Dissertation (Max-Planck-Institut, Stuttgart, 1996). 10 C.Brocker et al., Nucl. Instrum. Methodf Phys. Res. A290 (1990) 303. 11 F.Milcklich, Y.Hao and G.Petzow, Proc. Euromat '95, Assoz. Ital. di Metallurgia, Milano, 4 (1995) 305. 12 F.Mhcklich, H.Oettel and G.Petzow, Z.Metallk. 84 (1993) 419. 13 F.Mhcklich and G.Petzow, Development of Beryllium Single Crystal Material .hr Monochromator Applications, in: Mineral Processing and Extractive Metallurgy Review, Beryllium -Issue, Gordon andBreach, New York, (1993) 193. 14 C.May, P.Klimanek and A.Magerl, Nucl. Instrum. Method. Phys. Res. A357 (1995) 511. 15 A.K.Freund, Nucl. Instrum. Method. 7 (1974) 541. 16 A.K.Freund, NucI. Instrum. Method. Phys. Res. A238 (1985) 570.3 No related articles found! No Suggested Reading articles found! Viewed Full text Abstract Cited   Shared      Discussed