Study of the [beta]-->[omega] Phase Transformation in Zr-Nb Alloys by Elastic Constant Measurements |
Common terms and phrases
360 TEMPERATURE anomalous behavior atom attenuation b.c.c. matrix B₂ Bragg angle Bw phase transformation C₁₁ calculated cent alloy cent Nb alloys Cijkl Cometto composition curve decrease difference direction of propagation displacement vector dynes/cm² eigenvector Elastic Constant Data elastic constant measurements elastic energy density electron equation error evaluate extra reflections force constants fraction of omega function give grown 25 heat treatment Hewlett-Packard increase in intensity independent elastic constants lattice parameter linear longitudinal displacement longitudinal mode longitudinal wave low temperature maximum megahertz Nb as quenched Nb content Nb crystal Nb-Zr as grown Nb-Zr as quenched Niobium omega particles omega phase phase velocity present study quartz transducer quenched 20 quenched alloy resonance frequency shown in Fig signal single crystals sound velocity specimen holder stants Temperature dependence TEMPERATURE K Figure tion transducer transverse modes TRANSVERSE WAVE unit cell volume fraction wavelength X-ray measurements X-ray traces Zr-Nb system