本文对热处理条件下U－10％Zr合金马氏体相的形成和结构进行了研究．结果表明，合金试样在单相γ区和γ1+γ2混溶区水淬得到正交结构的马氏体α'相，而在β+γ2和α+γ2相区水淬可获得塑性较好的单斜结构的马氏体α"相；合金硬度防不同马氏体相的形成而变化.随着合金中马氏体相的出现，晶格参数a略有诂小，而b明显增大．
The martensitic phases and their structure of the heat treated U- 10%Zr alloy have been studied. The α′ martensite phase with orthorhombic structure and the high plastici-ty α″ martensite phase with monoclinic form can be obtained by water-quenching and an-nealing in γ single phase section or γl+γ2 miscibility gap and β+γ2 or α+γ2 phase section, respectively. Owing to forming martensite phase, both the hardness of the sample and the lat-tice parameters of α phase will be changed.
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