Effect of rolling temperature on microstructure and mechanical properties of a TiZrAl alloy

• Published in: Materials science & engineering. A, Structural materials : properties, microstructure and processing Vol. 635; pp. 36 - 42
• Main Authors: Jiang, X.J., Wang, X.Y., Feng, Z.H., Xia, C.Q., Tan, C.L., Liang, S.X., Zhang, X.Y., Ma, M.Z., Liu, R.P.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.05.2015
• Subjects: Ductility; Dynamics; Electron microscopy; Grain structure; High strength; Hot rolling; Mechanical characterization; Mechanical properties; Microstructure; Optimization; Thermomechanical processing; Titanium alloys; Titanium alloys; Electron microscopy; Mechanical characterization; Thermomechanical processing
• ISSN: 0921-5093; 1873-4936
• DOI: 10.1016/j.msea.2015.03.051

To obtain excellent mechanical properties and globular microstructure in TiZr based alloys, the variation of microstructure during hot rolling at a temperature range from α region to β region has been investigated in a TiZrAl alloy for further understanding and control of processing–structure–property relationships. Experimental results showed that when hot rolling at α region, increasing rolling temperature could enhance the progress of dynamic globularization and refine the grain structure. However, coarse grain with slender α lath appeared when rolling temperature was above the α→β transus temperature. The mechanical properties of studied alloy were also investigated with the change in rolling temperature. Outstanding mechanical properties (σb =1564MPa and ε=10%) were obtained when rolling at 800°C, which was found to be the optimal rolling temperature for this alloy. The high strength and good ductility of the studied alloy make it a good candidate for a wide range of applications.