ScholarWorks

Title

Grain Growth Characterization of Ni₂MnGa

Authors

Nikki Kucza, Department of Materials Science and Engineering, Boise State UniversityFollow
Martika Flores Ramos, Department of Materials Science and Engineering, Boise State UniversityFollow
Adrian Rothenbuler, Department of Materials Science and Engineering, Boise State UniversityFollow
Brittany Siewert, Department of Materials Science and Engineering, Boise State UniversityFollow
Peter Müllner, Department of Materials Science and Engineering, Boise State UniversityFollow

Document Type

Student Presentation

Publication Date

4-11-2011

Abstract

Project Overview:

• Magnetic shape memory alloys (MSMA) such as Ni₂MnGa possess a unique material property that allows them to strain up to 10% in an applied magnetic field.
• Strain is achieved through the magnetic-field-induced motion of twin boundaries.
• The highest reported strains have been found in single crystal MSMA but they are difficult and costly to produce.
• Polycrystalline materials are easier and more cost-efficient to produce than single crystals.
• Single crystals can be “cut out” from a polycrystalline material if individual grains are large enough.
• Very large grains may be formed via abnormal grain growth.

Faculty Sponsor

Dr. Peter Müllner