@inproceedings{8e76cef5e0054ce7ba425430ed27e7cd,
title = "Relationship between heterogeneous microstructure and fatigue strength of Ti-Nb-Ta-Zr alloy for biomedical materials subjected to aging treatments",
abstract = "β-type titanium alloys such as a Ti-29Nb-13Ta-4.6Zr alloy (TNTZ) are potential candidates for next-generation metallic biomaterials. However, the mechanical strength of b-type titanium alloys with a single b phase is not enough to be approved as materials for fabricating medical implant devices that are subjected to heavy loads, such as a spinal fixation device. Therefore, β-type titanium alloys are often subjected to aging treatments in order to improve their mechanical strength through precipitation hardening. However, β-type titanium alloys exhibit a heterogeneous microstructure because of microscale elemental segregation. In this study, the heterogeneous microstructure caused by the microsegregation of secondary phases was characterized by field emission scanning electron microscopy (FESEM) in TNTZ subjected to aging treatments. Furthermore, the influence of the heterogeneous distribution of secondary phases in TNTZ on mechanical properties was revealed by comparing its properties to the homogeneously structured TNTZ subjected to long-term homogenization.",
keywords = "Aging treatment, Biomaterials, Fatigue strength, β-type titanium alloy",
author = "Kengo Narita and Mitsuo Niinomi and Masaaki Nakai",
year = "2014",
doi = "10.4028/www.scientific.net/msf.783-786.1313",
language = "English",
isbn = "9783038350736",
series = "Materials Science Forum",
publisher = "Trans Tech Publications Ltd",
pages = "1313--1319",
editor = "B. Mishra and Mihail. Ionescu and T. Chandra",
booktitle = "THERMEC 2013",
note = "8th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC 2013 ; Conference date: 02-12-2013 Through 06-12-2013",
}