Elastic accommodation and anomalous tetragonality of thin-plate martensite in an Fe-31Ni-10Co-3Ti alloy revealed by in situ neutron diffraction at cryogenic temperatures

Journal of Alloys and Compounds 2026 Open access

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Authors: Takayuki Yamashita, Stefanus Harjo, Wu Gong, Takuro Kawasaki, Shigekazu Morito, Satoshi Morooka, Hidetoshi Fujii, Yo Tomota
DOI: 10.1016/j.jallcom.2026.186668
Cited by: 0
References: 45

Abstract

In this study, in situ neutron diffraction measurements during cryogenic cooling were performed on Fe-31Ni-10Co-3Ti alloy to evaluate changes in the austenite lattice constant and the tetragonality of martensite during the formation of thin-plate martensite. The average lattice constant of austenite changed only slightly during cooling owing to the Invar effect; however, it decreased below the Ms temperature (101 K

Fields of Study & Subjects

Shape Memory Alloy Transformations Microstructure and Mechanical Properties of Steels Advanced Materials and Mechanics

Publication details

Journal / source
Journal of Alloys and Compounds
Volume
1056
Pages
186668–186668
Publication date
1 February 2026
Language
EN