On the eutectoid transformation behavior of the Ti-Zn system and its metastable phases

JOURNAL OF ALLOYS AND COMPOUNDS

卷:718

Article

Brice, D. A.¹  Samimi, P.¹  Ghamarian, I.¹  Liu, Y.²  Mendoza, M. Y.¹  Kenney, M. J.¹  Reidy, R. F.²  Garcia-Avila, M.³  Collins, P. C.¹ 

[1] Iowa State Univ, Dept Mat Sci & Engn, Ames, IA 50011 USA

[2] Univ North Texas, Dept Mat Sci & Engn, Denton, TX 76203 USA

[3] ATI Specialty Mat, Monroe, NC USA

关键词: Electron microscopy;    Phase transformation;    Precipitation;    Martensite;    Intermetallics;    Titanium alloys;   

DOI  :  10.1016/j.jallcom.2017.05.103

来源: Elsevier

【 摘 要 】

To date, Zn has not been used as an alloying addition in structural Ti alloys. The main obstacle has been the disparity between their melting and vaporization temperatures. A novel processing technique was developed to create a Ti-Zn compound. The equilibrium phases and microstructures were studied by electron microscopy and x-ray diffraction techniques. Results show the presence of pearlitic domains of alpha-Ti (hexagonal closed packed crystal structure) and Ti2Zn (body center tetragonal structure) in regions that have a near eutectoid composition. Solutionizing and water quenching results in the formation of martensite along with intermetallic laths, suggesting that the eutectoid transformation is active. (C) 2017 Elsevier B.V. All rights reserved.

【 授权许可】

Free