Zr-Sn-Nb-Fe合金金属间化合物及其α/β相变温度的研究Investigation of intermediate phases and phase transition temperature of α/β in the Zr-Sn-Nb-Fe alloy
梁建烈,唐轶媛,严嘉琳,朱其明,庄应烘,文国富
摘要(Abstract):
利用大功率X射线衍射仪研究了Zr-1.0Sn-1.0Nb-0.3Fe合金金属间化合物的晶体结构,结果表明,Zr-1.0Sn-1.0Nb-0.3Fe合金的金属间化合物是Ti2Ni结构的立方(ZrNb)2Fe和六方Zr(NbFe)2。在轧制状态下,六方Zr(NbFe)2是主要的析出相。400℃淬火时,立方(ZrNb)2Fe是主要的析出物。750℃时,不再观察到六方Zr(NbFe)2;850℃时,不再观察到立方(ZrNb)2Fe。综合DTA和X射线测试结果,确定合金-αZr→-βZr转变开始温度为633℃,这个温度也是Zr(NbFe)2开始熔入-βZr的温度,在785℃,立方(ZrNb)2Fe开始熔入-βZr,到1000℃时,-αZr→-βZr转变结束。
关键词(KeyWords): 锆合金;相变;中间相;锆;铌;铁
基金项目(Foundation): 核燃料及材料国家级重点实验室基金(00JS85.9.1GX0101);; 广西科学基金(0448022、0728060);; 广西大型仪器协作共用网联合资助
作者(Author): 梁建烈,唐轶媛,严嘉琳,朱其明,庄应烘,文国富
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