摘要
β-quenching a Zr-1.15 wt％Cr-0.10 wt％Fe alloy produces a martensitic or a Widmanst(a|¨)tten transforma-tion morphology,or a mixture of the two,depending on the cooling rate.For the Widmanst(a|¨)tten structure,orthe mixed martensitic-Widmanst(a|¨)itten structure,a grain boundary phase is observed at most prior-β grainboundaries.X-ray line broadening analysis and the thermoelectric power(TEP)measurements of thesequenched samples show that not only the solubility of alloying elements in α-Zr matrix,but also substructure(microstrain,crystallite size and dislocation density)have an effect on TEP.Thus,TEP measurements are verywell suited for following the structural transformations taking place in Zr alloys during fabrication.
β-quenching a Zr-1.15 wt％Cr-0.10 wt％Fe alloy produces a martensitic or a Widmanst(a|¨)tten transforma- tion morphology,or a mixture of the two,depending on the cooling rate.For the Widmanst(a|¨)tten structure,or the mixed martensitic-Widmanst(a|¨)itten structure,a grain boundary phase is observed at most prior-β grain boundaries.X-ray line broadening analysis and the thermoelectric power(TEP)measurements of these quenched samples show that not only the solubility of alloying elements in α-Zr matrix,but also substructure (microstrain,crystallite size and dislocation density)have an effect on TEP.Thus,TEP measurements are very well suited for following the structural transformations taking place in Zr alloys during fabrication.
