Low-temperature aging treatment effect the properties of Ti-rich NiTi shape memory alloy

The effect of low-temperature aging treatment on the phase transformation and microstructure on the Ti-rich NiTi shape memory alloys. The recycled Ti wires are used to produce an alloy with a composition (49.9% at. Ni, and 50.1% at. Ti). The VIM method is used to manufacture the NiTi SMA. The sample...

Full description

Saved in:
Bibliographic Details
Published in:Applied physics. A, Materials science & processing Materials science & processing, 2023-10, Vol.129 (10), Article 698
Main Authors: Mohammed, Safa H., Aljubouri, Ali A., Kadhim, Mohammed Jawad
Format: Article
Language:English
Subjects:
Aging (metallurgy)
Applied physics
Characterization and Evaluation of Materials
Condensed Matter Physics
Intermetallic compounds
Low temperature
Machines
Manufacturing
Martensitic transformations
Materials science
Microstructure
Nanotechnology
Nickel base alloys
Nickel compounds
Nickel titanides
Optical and Electronic Materials
Physics
Physics and Astronomy
Processes
Shape effects
Shape memory alloys
Solution heat treatment
Surfaces and Interfaces
Thin Films
Titanium compounds
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The effect of low-temperature aging treatment on the phase transformation and microstructure on the Ti-rich NiTi shape memory alloys. The recycled Ti wires are used to produce an alloy with a composition (49.9% at. Ni, and 50.1% at. Ti). The VIM method is used to manufacture the NiTi SMA. The samples aged at different temperatures after the solution heat treatment at 850 °C for 15 min. The results show that all samples undergo a one-step transformation during the cooling and heating processes. Increasing the As and Af of samples aged at 350 °C, and 450 °C, while decreasing the As and Af temperatures of the sample aged at 550 °C, compared with a solution-treated sample. The microstructure of all SMAs samples contains the Ti 2 Ni phase and increases its amount with increasing aging temperatures.
ISSN:0947-8396
1432-0630
DOI:10.1007/s00339-023-06991-6