The effect of adding alloying element yttrium and tantalum on mechanical properties of NiTi shape memory alloy
Joint Authors
al-Hamdani, Abd al-Karim Abd al-Razzaq
al-Fatlawi, Abd al-Rahim Kazim Abd Ali
Abd al-Rida, Hanan J.
Source
Journal of University of Babylon for Engineering Sciences
Issue
Vol. 26, Issue 3 (31 Mar. 2018), pp.153-164, 12 p.
Publisher
Publication Date
2018-03-31
Country of Publication
Iraq
No. of Pages
12
Main Subjects
Abstract EN
Nickel titanium(NiTi) shape memory alloys have increased utilization for different engineering applications especially in biomedical applications .The aim of this study, first studied the powder metallurgy process variables such as compacting stress and sintering cycles on several physical tests such as x-ray diffraction, porosity and apparent density as well as mechanical tests such as microhardness, surface roughness , second studied the effect of alloying element of yttrium and tantalum on microhardness, surface roughness of NiTi shape memory alloys.
Several alloys have been prepared by powder metallurgical technique.
Vickers hardness, surface roughness measurements, XRD analysis, porosity and apparent density were performed.
It was shown that the XRD diffraction tests of all samples have the same results of two phases at room temperature (RT) (monoclinic NiTi and hexagonal Ni3Ti).the result of adding tantalum in the percentage of (1%,2% and3%) in the expense of nickel, increasing hardness value gradually to record the highest value (310) HV at 3%.and also decrease the surface roughness from (0.36 to 0.15) µm at 3%Tantalum and 650 Mpa.
While the result of adding yttrium in the percentage of (1%, 2% and3%) %Wt.
in the expense of nickel, shown that the specimen of 2 % Yttrium and 650 Mpa compacting stress showed the hardness value of (275.7) HV .The hardness value decreases at 3 % and 1% additives at the same compacting stress to (272.26 and 200) HV respectively.
The addition of Tantalum element decreases the surface roughness from (0.36 to 0.15) µm at 3%Tantalum and 650 Mpa .While the specimen of 2% Yttrium at 650 Mpa shown (0.16) µm surface roughness.
American Psychological Association (APA)
al-Hamdani, Abd al-Karim Abd al-Razzaq& al-Fatlawi, Abd al-Rahim Kazim Abd Ali& Abd al-Rida, Hanan J.. 2018. The effect of adding alloying element yttrium and tantalum on mechanical properties of NiTi shape memory alloy. Journal of University of Babylon for Engineering Sciences،Vol. 26, no. 3, pp.153-164.
https://search.emarefa.net/detail/BIM-917982
Modern Language Association (MLA)
al-Hamdani, Abd al-Karim Abd al-Razzaq…[et al.]. The effect of adding alloying element yttrium and tantalum on mechanical properties of NiTi shape memory alloy. Journal of University of Babylon for Engineering Sciences Vol. 26, no. 3 (2018), pp.153-164.
https://search.emarefa.net/detail/BIM-917982
American Medical Association (AMA)
al-Hamdani, Abd al-Karim Abd al-Razzaq& al-Fatlawi, Abd al-Rahim Kazim Abd Ali& Abd al-Rida, Hanan J.. The effect of adding alloying element yttrium and tantalum on mechanical properties of NiTi shape memory alloy. Journal of University of Babylon for Engineering Sciences. 2018. Vol. 26, no. 3, pp.153-164.
https://search.emarefa.net/detail/BIM-917982
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 163-164
Record ID
BIM-917982