Local Structure Analysis of Incommensurate Phase in Ti-42Ni-8Fe(at.%) Alloy by X-ray Fluorescence Holography. (2015)

• Record Type: Journal Article
• Authors: Terai, T.; Toriyama, A.; Fukuda, T.; Kakeshita, T.; Hayashi, K.; Happo, N.; Hosokawa, S.
• Is Part Of: Materials today. Volume 2(2015)Supplement 3
• Page Start: S933
• Page End: S936
• Publication Date: 2015
• Subjects: Shape memory alloy -- Titanium -- X-ray fluorescence holography -- Local structure -- Charge density wave -- Strain glass; Materials science -- Congresses -- Periodicals; 620.1
• DOI: 10.1016/j.matpr.2015.07.435
• Languages: English
• ISSNs: 2214-7853

Abstract

Abstract: We have investigated local structures around Ni and Fe atoms by X-ray fluorescence holography (XFH) method in incommensurate (IC) phase of Ti-42Ni-8Fe(at.%) alloy and obtained the results as the followings; (i) The atomic distances between Ni atom and Fe atom and those 2nd nearest neighbor atoms are 0.27 nm and 0.29 nm, respectively. (ii) The atomic image intensities of 1st nearest neighbor atoms around Fe atoms are much weaker than those around Ni atoms. These results indicate that nanometer-sized heterogeneous strain exists and it is the cause of nanometer-sized domain in IC phase.