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α-Zr→β-Zr转变开始温度为633℃,这个温度也是Zr(NbFe)2开始熔入β-Zr的温度,在785℃,立方(ZrNb)2Fe开始熔入β-Zr,到1000℃时,α-Zr→β-Zr转变结束.
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