DETERMINATION OF LONG-RANGE ORDER IN NI-BASE TERNARY ALLOYS BY X-RAY ANOMALOUS DIFFRACTION USING SYNCHROTRON RADIATION

被引：34
|
作者：
MARTY, A
BESSIERE, M
BLEY, F
CALVAYRAC, Y
LEFEBVRE, S
机构：
[1] CNRS, LAB UTILISAT RAYONNEMENT ELECTROMAGNET, F-91405 ORSAY, FRANCE
[2] DOMAINE UNIV, ECOLE NATL SUPER ELECTROCHIM & ELECTROMET GRENOBLE, F-78402 ST MARTIN DHERES, FRANCE
来源：
ACTA METALLURGICA ET MATERIALIA | 1990年 / 38卷 / 02期
关键词：
D O I：
10.1016/0956-7151(90)90065-O
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Long range order (LRO) parameters in three ternary Ll2 alloys [Ni75Al15Ti10, Ni70Al20Cr10 and (Ni3Fe)96.4Cr3.6] have been measured using a new method. This method takes advantage of the variation in atomic scattering factors for X-rays near absorption threshold and opens a new area of research with the development of synchrotron facilities. The results show that Ti substitutes mostly, but not exclusively, for Al in NiAlTi. In NiAlCr, Cr occupies both Ni and Al sites. In NiFeCr, the order is not perfect; the Cr atoms are distributed on both types of sites, with a slight preference for Fe sites. © 1990.
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收藏
页码：345 / 350
页数：6
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