U－10Zr合金δ相的均匀范围和结构

HOMOGENEITY KANGE AND STRUCTURE OF δ PHASE IN U-10Zr ALLOYS

使用７３３电子显微分析仪、Ｘ射线衍射仪对由感应熔炼喷射铸造法制备的铸态Ｕ－１０％（ｍ／ｍ）Ｚｒ合金试样中间相（δ相）的均匀范围、微观形貌及晶体结构进行分析。初步确定出δ相的均匀范围是：Ｚｒ的原子百分数为６６．２％－８０．４％，理想组成为ＵＺｒ＿２，具有六方晶格结构。

Homogeneity range, microstructure and crystal structure of the intermediate δ phase inU-10 %(m/m)Zr alloys are examined by using 733 electron microanalyzer and X-raydiffractometer. As-cast U-10%(m/m)Zr alloys are prepared by the induction melting and injec-tion casting device. The homogeneity range of δ phase is determined to be 66.2%-80.4% Zratom percent.Ideal composition of δ phase is UZr_2,and it has hexagonal closed packingstructure.