金属学报  1987, Vol. 23 Issue (1): 50-56

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微量元素对Nb_3Sn层形成的影响

李绍光;唐全红;宋居易;庄祥麟

中国科学院金属研究所;中国科学院金属研究所;中国科学院金属研究所;中国科学院金属研究所

EFFECT OF SMALL ALLOYING ADDITIVES ON FORMATION OF Nb_3Sn LAYER

LI Shaoguang TANG Quanhong SONG Juyi ZHU ANG Xianglin

李绍光;唐全红;宋居易;庄祥麟. 微量元素对Nb_3Sn层形成的影响[J]. 金属学报, 1987, 23(1): 50-56.
, , , . EFFECT OF SMALL ALLOYING ADDITIVES ON FORMATION OF Nb_3Sn LAYER[J]. Acta Metall Sin, 1987, 23(1): 50-56.

摘要 参考文献 相关文章 Metrics 全文: PDF(1750 KB)   摘要: 本文用金相、扫描电镜、X 射线衍射和电子探针方法研究了改良青铜法制作的Nb_3Sn 化合物层生成厚度、扩散速率、晶粒和结构.在含7at.-%Sn 青铜基体中加入微量元素:Mg,Al,Y,并在 Nb 芯材中加入 1Wt-%Zr,加速了 Nb_3Sn 层的生成速率并使其晶粒细化.上述效应以青铜中加入0.1—0.5at.-%Mg 较为明显,Nb芯中加1Wt-%Zr 也能起到类似的效果.但当 Al 含量增加到1at.-%时,将引起青铜加工硬化,试样在较大的形变量下容易开裂。生成的 Nb_3Sn 层呈 A-15结构.在近青铜一侧的 Nb_3Sn 层中含有少量的 Cu,而 Mg,Al 则富集于青铜/Nb_3Sn 界面附近的青铜基体中,Nb_3Sn 层中 Mg,Al 含量甚微。铌芯中的 Zr 会少量地扩散到青铜基体中去. Abstract：The thickness,diffusion rate,grain size and structure of the Nb_3Sn layer prepared by modified bronze process have been examined by means of metallog- raphy,SEM,X-ray diffraction and EMPA.Both Small amount of Mg,A1 or Y added to the Cu-7at.-%Sn matrix and 1wt-% Zr added to the Nb care may ac- celerate the rate of formation and refine the grain size of the Nb_3Sn layer.The effect of addition of either 0.1—0.5 at.-% Mg to bronze or 1 wt-% Zr to Nb core is most predominante among them:The A1 added up to 1 at.-% may cause the bronze to work hardening and the specimen to premature failure under defor- mation.The structure of Nb_3Sn layer formed is of A15 type as shown by X-ray diffraction.Only trace Cu is found in Nb_3Sn layer nearby bronze,but Mg or A1 is enriched in the bronze matrix near the bronze/Nb_3Sn interface.In Nb_3Sn layer trace Mg or A1 is detected.Zr may diffuse from Nb core into bronze ma- trix in certain amount. 收稿日期: 1987-01-18      服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 李绍光 唐全红 宋居易 庄祥麟 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1987/V23/I1/50 1 Suenaga M,Klamat C,Bussiere J F.IEEE Trans Magn,1977;MAG-13:432 2 Togano Kazumasa,Asako Toshihisa,Tachikawa Kyoji.J Less-Common Met,1979;68:15-22Z No related articles found! Viewed Full text Abstract Cited   Shared      Discussed