Effect of Substructure on the Thermoelectric Power of aβ-Quenched ZrCrFe Alloy  

作　　者：DerekO.Northwood 孙喜臣 

机构地区：[1]Engineering Materials Group,Dept,of Mechanical Engineering,University of Windsor,Windsor,Ontario,Canada N9B3P4

出　　处：《Rare Metals》1993年第2期110-116,共7页稀有金属（英文版）

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,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.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.

关 键 词：ZrCrFe alloy SUBSTRUCTURE Heat treatment Thermoelectric power 

分 类 号：TG146.4[一般工业技术—材料科学与工程]