The microstructure, mechanical property and corrosion behavior of magnesium alloy WE43 (MgYNdZr alloy) in the environment simulating biological fluid were investigated. Samples of ultrafine-grained magnesium alloy with high mechanical properties were obtained by methods of severe plastic deformation. Programmed plastic deformation was realized by two methods: extrusion alternating with upsetting at gradually lowering the temperature and equal-channel angular pressing.

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Polar and azimuthal diagrams of the microhardness of yttrium single crystals are constructed. The polar diagram of the microhardness in the (1122) planes with the c axis is close in its form to an ellipsoid of rotation around the [OOOl] direction with axes 90 and 40 kg/mm2. The azimuthal anisotropy of microhardness in the (0001) and (1010) planes of single crystals with anisotropy coefficients of the second kind of 1.1 and 2.45 is found. The first kind anisotropy coefficients have il maximum of m 1.6 in the (1010) and (1120) planes. HTTPHR. rIonfipHacI HHarpaMMa MHKpoTsepnocTH B IIJIOCIEOCTRX (112x), cozepmanwix ocb c , no @ o p e 6 n~3~a K a n n~n c o~~y apaweana BoKpyr HanpasneHm [OOOl] c OCFIMH nOCTpOeHbI IIOJIRpHbIe M a3HMyTaJIbHbIe AHarpaMMbI M&TKPOTBePAOCTH MOHOKPHCTaJIJIOB 90 II 40 kg/mm2. 06HapyMeHa a3HMyTWlbHaR aHH30TpOpnIIII MHKpOTBepAOCTH B IIJIOCIEO-CTRX (0001) M (1010) MOHOIEPMCTaJIJlOB C IEO3@@MUMeHTaMH aHH30TpOnlm BTOpOrO pow PaBHbIMH COOTBeTCTBeHHO 1 ,I II 2,45. H03@#&TlJHeHTbI aHH30TpOnHH nepBOr0 pOHa MaKCHMaJIbHbI (% 1,6) B IIJIOCIEOCTIIX (1010) II (1120). l) 4, Dzerzhinskii pl., 310077 Kharkov, USSR.

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