Title: NiTiCu shape memory alloy produced by powder technology
Authors: Goryczka, Tomasz ×
Van Humbeeck, Jan #
Issue Date: May-2008
Publisher: Elsevier science sa
Series Title: Journal of alloys and compounds vol:456 issue:1-2 pages:194-200
Abstract: The main aim of presented work was to find the sintering conditions (temperature and time) for manufacturing of a Ni(50-X)Ti50CuX alloy (where X = 2, 3, 5, 10, 15, 20 and 25 at%) by powder technology. Various conditions of sintering considering temperature and time were applied to compacted powders. Sintering temperature varied from 850 to 1100 degrees C and sintering time was chosen from a range of 5-50h, respectively. Microstructure, structure, chemical composition and thermal behavior of sintered blends were studied by scanning electron microscopy (SEM), differential scanning calorimetry (DSC) and X-ray diffraction. Homogenous alloys, containing lower addition of copper (less than 10 at%), were sintered at 940 degrees C for 7 h. For higher copper content (10-25 at%) lower sintering temperature 850 degrees C but longer sintering time was preferred (20 h). The quality of the alloy was characterized by porosity and density. In sintered blends non-transformable phases Ti-2(Ni,Cu) and (Ni,Cu)(3)Ti, which posses the crystal structure of Ti2Ni and Cu3Ti, respectively, were found. Despite the fact that same sintering conditions lead to an increase of inhomogeneity all sintered alloys reveal the presence of the reversible martensitic transformation. Obtained results allowed to optimize sintering condition for NiTiCu shape memory alloy manufacturing. (c) 2007 Elsevier B.V. All rights reserved.
ISSN: 0925-8388
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Physical Metallurgy and Materials Engineering Section (-)
× corresponding author
# (joint) last author

Files in This Item:
File Description Status SizeFormat
pub04404.pdfMain article Published 1148KbAdobe PDFView/Open Request a copy

These files are only available to some KU Leuven Association staff members


All items in Lirias are protected by copyright, with all rights reserved.

© Web of science