Parameters Evolution of Orthorhombic Martensite Lattice Ti-Mo-Al Alloys Studied by in Situ T-XRD

5th Annual International Conference on Material Science and Environmental Engineering

材料科学;生态环境科学

Demakov, Sergey^1 ; Semkina, Iana^1 ; Yurovskikh, Artem^1

Department of Heat Treatment and Metal Physics, Ural Federal University Named after the First President of Russia B.N. Yeltsin, Faculty of New Materials and Technologies, 28 Mira St., Yekaterinburg, Russia^1

关键词: Al-alloy;    Critical ratio;    In-Situ Study;    Orthorhombic martensite;    X ray diffractometers;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/301/1/012003/pdf
DOI  :  10.1088/1757-899X/301/1/012003

来源: IOP

【 摘 要 】

In-situ study of heating in an X-ray diffractometer of Ti-8Mo and Ti-3Al-7Mo alloys samples quenched from different temperatures of α+β and β-fields was carried out. The characteristics of anisotropy thermal expansion of orthorhombic martensite lattice were investigated. It is shown that there is a critical ratio of lattice parameters R = 3a/b close to 1.11, after which either a reverse martensitic transformation occurs, or R of the martensite lattice decreases upon further heating.