CONTENTS OF VOLUME 73 Nos. 1-6 NUMBER I—JANUARY Strain field and strain contrast of columnar defects in heavy-ion irradiated superconductors By Yime! Zuu, Z. X. Car and D. O. WELCH The stresses due to arrays of inclusions and dislocations of infinite length in an anisotropic half space. Application to strained semiconductor structures By T. J. GosLING A chemical approach to ductile versus brittle phenomena By M. E. EBERHART Prismatic and basal slip in Ti;Al. I. Frictional forces on dislocations By M. LeGros, A. Couret and D. CAILLARD Prismatic and basal slip in Ti;Al. II. Dislocation interactions and cross-slip processes By M. Leacros, A. Couret and D. CAILLARD Symmetry properties of the collective diffusion correlation factors in the random alloy By I. V. BeLova and G. E. Murcu A theory of diffusion in the ordered alloy. I. Tracer correlation effects By I. V. BELova and G. E. Murcu Two approaches for the evaluation of collective diffusion correlation factors By I. V. BeLova and G. E. Murcu Dendrites of silicon nitride grown in free space by a rapid condensation method By K. YAMADA and A. B. SAWAOKA Rapid growth of zinc oxide polyhedral crystals from whiskers using a shock wave technique By K. YAMADA Vacancy ordered structure of the III, VI, compound semiconductor (Ga,In,_,),Se3 studied by electron diffraction and microscopy By J. Ye, Y. NAKAMuRA and O. NitTono Convergent beam electron diffraction zeroth order Laue zone and higher order Laue zone analysis of order in TiAl alloys By C. J. Rossouw, M. A. Gipson and C. T. Forwoop Positron and transmission electron microscopy study of precipitation phenomena in an Al-Li—Zr alloy By M. D. Ayciriex, N. bE Dieco, A. Dupasquier, J. DEL Rio and A. SOMOZA Structure analysis of the £ = 7 ((1230) /[0001} 21-8°) grain boundary in -Ti By Y. Wana, J. Li and H. YE Internal friction study of sialon ceramics By K. Ora and G. PezzortTi CONTENTS OF VOLUME 73 Effect of segregation on the shape of grain boundary diffusion profiles. Experimental study of the Cu-Ag system By J. BERNARDINI, Zs. TOKE! and D. L. BEKE Study of copper precipitates in «-iron by computer simulation. II. Interatomic potential for Fe—Cu interactions and properties of coherent precipitates By Yu. N. Osetsky and A. SERRA NUMBER 2—FEBRUARY The deformation behaviour of grain boundary regions in polycrystalline aluminium V. RANDLE, N. HANSEN and D. JuUL JENSEN The crystal structure of the Au,,In3 phase By K. Kirune, Y. Kusota and K. YAMAMOTO Densification of powder materials in non-uniform temperature fields By K. I. RyBakov and V. E. SEMENov Phason defects in APd—Mn approximant phases By H. Kein, M. Aupier, M. Bouparp, M. DE BoissiEu, L. BERAHA and M. DuNEAU A new model for {1012} twin growth in hcp metals By A. Serra and D. J. BACON Rapid work hardening caused by cube cross slip in Ni3Al single crystals By K. Jumonn, S. Ueta, A. MryAHArRA, M. Kato and A. SATo High-resolution and in-situ transmission electron microscopy investigation of the martensitic fec--dhcp phase transformations in Co—Fe single crystals By T. Wartz and H. P. KARNTHALER Electron microscope study of the symmetry of the basic atom cluster and a structural change of decagonal quasicrystals of AlI-Cu—Co alloys By K. Sarton, K. TsupA, M. TANAKA, A. P. Tsal, A. INoUE and T. MAsuMoTO Determination and study of the strength of the blister field generated by conical indentation By M. S. Bossi and S. K. Biswas Local ordering of oxygen vacancies in cubic zirconia (ZrO) stabilized with yttria (Y,03) and magnesia (MgO). I. Electron diffuse scattering study By. Z. R. Dai, Z. L. Wana, Y. R. CHEN, H. Z. Wu and W. X. Liu... High resolution electron microscopy of dissociated dislocations in silicon with a normal-incident electron beam By. K. Suzuki, N. MAgEDA and S. TAKEUCHI Transmission electron microscopic observation of thermally introduced planar faults in Fe-35 mol.% Al alloys By K. Yosuimi, S. HANADA, T. ONUMA and M. H. Yoo Kinetics of materials with wiggly energies: theory and application to the evolution of twinning microstructures in a Cu-Al—Ni shape memory alloy By R. ABEYARATNE, C. Cuu and R. D. JAMEs CONTENTS OF VOLUME 73 Incommensurate modulated structure in the icosahedral quasicrystalline phase T2 of an AI-Li—Cu alloy By D. P. Yu, Z. ZHANG and N. BALuc NUMBER 3—MARCH Computer simulation of the structure and thermo-elastic properties of a model nanocrystalline material By J. Wana, D. Wo r, S. R. PHiLtpot and H. GLEITER [010] and [001] dislocations in laser clad NbAI, on Nb Y. Liu, J. MAzuMDeER, B. W. RoBERTSON and S. TEWARI Phase stability and transformation in nanometre-sized Au—Pb alloy clusters produced by spontaneous alloying By H. YAsupa and H. Mori Characterizing faulted dipoles in deformed gamma TiAl By B. Vicurer and K. J. HEMKER Plastic deformation, extended stacking faults and deformation twinning in single crystalline indium phosphide. 2. S doped InP By M. Azzaz, J.-P. MicHeL and A. GEORGE The atomic structure of asymmetric [001] tilt boundaries in SrTiO; By M. M. McGisson, N. D. Browninc, A. J. McGispon and S. J. PENNYCOOK Structural perturbations at intervals of the coherence length in YBazCu;O7_; (6 < 0-1) By J. ETHERIDGE The effect of stress on the shape of a blocked deformation twin By S. V. Kamat, J. P. HirtH and P. MULLNER Lattice diffusion kinetics in Y,O3-stabilized cubic ZrO, single crystals: a dislocation loop annealing study By F. R. Cuten and A. H. HEvER Dissociation of lattice dislocations in SrTiO; By Z. Mao and K. M. KNowLEs Oxidation of refractory intermetallic compounds: kinetics and thermodynamics By S.-L. ZHANG, A. PiscH and F. M. D’HEURLE High-strength intermetallic TiAl synthesized via high-temperature crystal- lization of the amorphous alloy By H. Kimura A note on the deformation behaviour of two-dimensional model cellular structures By O. PRAKASH, P. BicHEBois, Y. BRECHET, F. LoucHeT and J. D. Empury On the nucleation of 1[ 031] stacking faults in YBa,Cu;O,_; By J. RABIER CONTENTS OF VOLUME 73 Atomistic study of partial misfit dislocations in Ge/Si(001) heterostructures By M. Icuimura and J. NARAYAN On the structure of faults in pyrites By A. J. Strutt and K. S. VEccHIo NUMBER 4—APRIL Critical analysis of local constitutive models for slip and decohesion By R. MILLER and R. PHILLIPs A static-dynamic model for the process of cyclic saturation in fatigue of metals By O. B. PEDERSEN New carbides observed by high-resolution electron microscopy in a molybdenum bicrystal containing a 2 = 5 symmetrical boundary By J. M. Pénisson, M. BaciA and M. BiIsconpI Strain-rate effects on intermediate-temperature embrittlement of Cu-SiO, bicrystals with [001] twist boundaries By H. Miura, T. Sakai, N. TADA and M. Kato Thermal ageing of an Fe—Cu alloy: microstructural evolution and precipitation hardening By M. CuHarLeux, F. Livet, F. Bley, F. Loucuet and Y. BRECHET.... Self-diffusion in «-Al,03. II. Oxygen diffusion in ‘undoped’ single crystals By D. Prot and C. Monty Self-diffusion in «-Al,O3. III. Oxygen diffusion in single crystals doped with Y,0; By M. Le Gai, A. M. Huntz, B. LEsaGE and C. Monty Self-diffusion in «-Al,O,. IV. Oxygen grain-boundary self-diffusion in undoped and yttria-doped alumina polycrystals By D. Prot, M. LE GALL, B. Lesace, A. M. Huntz and C. Monty... High-resolution transmission electron microscopy of the AI-Pd—Mn decagonal quasicrystal with 1-6nm periodicity and its crystalline approximants By W. Sun and K. HiraGa Diffusion-induced grain-boundary migration during internal reduction of chromium-doped Al,0; By M. BAckHAus-RICOULT and A. PEYRoT-CHABROL Thermodynamics of martensitic transformations affected by hydrostatic pressure By V. A. CHERNENKO and V. A. L’vov Dynamical transmission electron microscopy microstructure associated with electron—phonon interaction in high-damping Cu-Mn alloys By K. Apacui, T. YAMASHITA, Y. TANEDA, D. M. Farkas, and J. PERKINS The deformation substructure in cyclically deformed TiAl PST crystals By H. Y. YAsupA, T. NAKANO and Y. UMAKOSHI CONTENTS OF VOLUME 73 Effect of lamellar structure and plastic anisotropy on the cyclic deformation and fatigue behaviour of TiAl PST crystals By H. Y. Yasupa, T. NAKANO and Y. UMAKOsHI The effect of room temperature deformation on the yield stress anomaly in Ni;(AIHf)B By S. S. Ezz and P. B. Hirscu Application of the linear regression method for comparison of crystallographic textures By J. TARASIUK and K. WIERZBANOWSKI On the bifurcation of cone cracks in glass plates Variation of the effective elastic constants in the sample coordinate system with tilt angle (y) for X-ray strain—stress analysis By YONGcHU SonG and I. C. NoyAn Rodrigues parameterization for orientation and misorientation distributions By A. Morawiec and D. P. FIELD The effects of ion implantation on the microstructure of CulnSe, single crystals By C. A. MuLLan, C. J. Kiety, M. V. YAKuSHEvV, M. IMANIEH, R. D. TOMLINSON and A. ROCKETT Quasicrystals in an aluminium alloy matrix and the transformation to - AIMnhnSi via intermediate stages By V. HanseEN and J. GJONNES The formation of antiphase-boundary tubes in Ni;Al By X1IAO0LI Sui, G. SAADA and P. VEySSIERE Roles of edge and screw dislocations in the environmental embrittlement of an Fe—Al intermetallic compound By H. Saka and T. NISHIZAKI On the transition from power-law creep to diffusional creep By JiAN NONG WANG Free surface relaxation of a hexagonal network of misfit dislocations By R. BONNET A many-body potential model for Zn By A. G. MIKHIN and N. DE DiEGo A theory of diffusion in the ordered alloy. II. Percolation and tracer diffusion By I. V. BeLova and G. E. Murcu Influence of the relaxation state on the crystallization kinetics of Sb-rich SbGe amorphous films By M. C. Morita, C. N. AFonso, A. K. PetForD-LoNG and R. C. CONTENTS OF VOLUME 73 NUMBER 5—MAY A novel configuration of atomic steps observed on vicinal silicon (100) surface annealed in a hydrogen atmosphere By L. ZHonc, A. Hoyo, Y. MatsusHita, Y. ABA, K. HAYASHI, R. TAKEDA, H. Surat, H. Sarto, J. MATsusHITA and J. YOSHIKAWA.. The effect of twinning on the shapes of cube—cube-related Ge precipitates in Al By S. Q. X1Ao, S. HINDERBERGER, K. H. WEsTMACoTT and U. DAHMEN Resistance to sliding on atomic scales in the adhesive contact of two elastic spheres By C. Dominik and A. G. G. M. TIELENS Low angle grain boundary diffusion of Cr in Nb bicrystals By X. M. Li and Y. T. CHou The relationship between the golden section © and the elastic constants of ensembles selected by diffraction methods By C. E. Murray and I. C. NoyAn Mathematical model for strain relaxation in multilayer metamorphic epitaxial structures By D. J. DUNSTAN Dislocations at 120° order interfaces in TiAl By B. J. INKson and C. J. HUMPHREYS Stress in a gravitating sphere By E. H. YOFFE The effect of X-radiation on the plastic deformation of ice By X. Hu, F. Liu, I. BAKER and D. BLAck On the contribution of screw dislocations to internal stress fields associated with dislocation cell structures By D. RAABE The nucleation of microcracks in ice cubes compressed equally on all boundaries By J. Weiss, E. M. SCHULSON and H. J. Frost The dislocation microstructure in orthorhombic O Ti,AINb deformed between room temperature and 800°C By F. PopiLLe and J. DouIn The effect of prestraining temperature on the mechanical behaviour of Ni(Al, Hf) single crystals By X. Sui, G. SAADA and P. VEyssIERE A novel design method for the suppression of edge dislocation formation in step- graded InGaAs/GaAs layers By G. MAcPHERSON, R. BEANLAND and P. J. GoODHEW Simulation of decorated dislocation images in X-ray section topographs By A. J. HOLLAND and B. K. TANNER CONTENTS OF VOLUME 73 Elastic constants and their temperature dependence for the intermetallic compound Ti;Al By K. TANAKA, K. Okamoto, H. INu1, Y. MINONISHI, M. YAMAGUCHI and M. Korwa Diffusion—reaction model for the trapping of positrons in grain boundaries By R. WorscHum and A. SEEGER NUMBER 6—JUNE Development of localized orientation gradients in fcc polycrystals By A. J. BEAuDoINn, JR, H. MeckiNG and U. F. Kocks The 5-Al,Cuy phase as an approximant of quasicrystals Quasicontinuum analysis of defects in solids By E. B. Tapmor, M. Ortiz and R. PHILLIPS The bulk processing of 2223 BSCCO powders. I. Densification and mechanical response By S. E. SCHOENFELD, S. Axuzi, R. J. ASARo and W. R. BLUMENTHAL The bulk processing of 2223 BSCCO powders. II. Tape rolling By S. E. SCHOENFELD, R. J. AsAro, S. Anzi, J. F. BINGERT and J. O. WILLIs Universal weight functions for elastically anisotropic, angularly inhomogeneous media with notches or cracks By A. Yu. BeLov and H. O. K. KIRCHNER High-resolution electron microscopy study of the junction between a coherent {111} and an incoherent {121} twin boundary in TiAl By B. J. INKson and C. J. HUMPHREYS A microstructural approach to the effective transport properties of multiphase composites Local ordering of oxygen vacancies in cubic zirconia stabilized with yttria and magnesia. II. Determination of local ordering parameters of oxygen vacancies By Z. R. Dat, Z. L. WANG and W. X. Liu A theory of diffusion in the ordered alloy. III. Chemical diffusion By I. V. BeLova and G. E. Murcu Elastic constants of Al-based icosahedral quasicrystals By K. Tanaka, Y. Mitarai and M. Korwa Amorphous phase in electrochemically oxidized porous silicon By M. A. Popescu, V. N. Cuumasn, I. Cosocaru, V. K. JAIn and GP zones and precipitate morphology in aged AL-Mg alloys By M. Boucuear, D. HAMANA and T. Laout! Subject index Index of authors