Determination of the order in γ1 intermetallic phase in Cu-Al-Ni shape memory alloys

被引：15
作者：
Pérez-Landazábal, JI
Recarte, V
Nó, ML
San Juan, J
机构：
[1] Univ Publ Navarra, Dept Fis, Pamplona 31006, Spain
[2] Univ Basque Country, Fac Ciencias, Dept Fis Aplicada 2, EHU, E-48080 Bilbao, Spain
[3] Univ Basque Country, Fac Ciencias, Dept Fis Mat Condensada, EHU, E-48080 Bilbao, Spain
来源：
INTERMETALLICS | 2003年 / 11卷 / 09期
关键词：
ternary alloy system; crystallography; precipitates; site occupancy; diffraction (neutron);
D O I：
10.1016/S0966-9795(03)00121-3
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Stable phase precipitation produces deleterious effects in the characteristics Of the martensitic transformation in shape memory alloys. In particular, the gamma(1) phase appears during heating as a primary precipitation previous to the eutectic reaction in Cu-Al-Ni alloys. Nevertheless the crystallographic structure of this gamma(1) phase in Cu-Al-Ni alloys is not well known. Neutron Powder Diffraction measurements have been performed at 546degreesC in a Cu-27.4 Al-3.6 Ni at.% alloy where two eutectic phases alpha and gamma(1) have been identified. Rietveld analysis allows determining the positions and the site occupancy of the different atoms in the gamma(1) phase. (C) 2003 Elsevier Ltd. All rights reserved.
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收藏
页码：927 / 930
页数：4
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