Deformation Induced Phase Seperation of Ni45Co5 Mn36.7In13.3 Alloy at High Temperature

Abstract:

Article Preview

NiMnCoIn alloys are new-type magnetic shape memory alloys (MSMAs) in which a reversible magnetic-field-induced phase transformation was observed. They are ideal candidates of materials used in actuators and sensors. The polycrystalline NiMnCoIn alloys are generally brittle so that they can not be easily deformed into the shape applicable to actuators and sensors until now. In the present paper, the influence of hot deformation on the microstructure of Ni45Co5 Mn36.7In13.3 alloy was studied. The experimental results showed that second phase was observed after deformation at high temperature between 800~900 °C and at strain rate lower than 4×10-3s-1. The content of Co of second phase was higher than the matrix alloy, while the content of In was lower than the matrix alloy. It was determined by TEM measurements as γ phase with fcc structure which was popular in NiFeGa and NiMnGaCo alloys. It is possible to improve the ductility of Ni45Co5Mn36.7In13.3 alloy by control of amount and distribution of γ phase by hot deformation.

Info:

Periodical:

Materials Science Forum (Volumes 702-703)

Edited by:

Asim Tewari, Satyam Suwas, Dinesh Srivastava, Indradev Samajdar and Arunansu Haldar

Pages:

896-899

DOI:

10.4028/www.scientific.net/MSF.702-703.896

Citation:

G. Wang et al., "Deformation Induced Phase Seperation of Ni45Co5 Mn36.7In13.3 Alloy at High Temperature", Materials Science Forum, Vols. 702-703, pp. 896-899, 2012

Online since:

December 2011

Export:

Price:

$35.00

In order to see related information, you need to Login.

In order to see related information, you need to Login.