Effect of Near-Isothermal Forging Temperature on the Microstructure and Mechanical Properties of Near α High Temperature Titanium Alloy

Abstract:

The effect of near-isothermal forging temperature on the microstructure and mechanical properties of Ti-Al-Sn-Zr-Mo-Nb-W-Si-Er near α high temperature titanium alloy was investigated by near-isothermal forging at the strain rate of 0.01s^-1 and 80% deformation. The results indicated that near-isothermal forging temperature of 1050°C is relatively low. After forging at 1050°C the grain growth is not obvious and original β grain as well as intragranular lamellar are fine. By comparison, the alloy forged at 1120°C possessed typical basket weave microstructure. With the increase of near-isothermal forging temperature, the tensile strength and plasticity of the alloy decrease. Excellent comprehensive mechanical properties could be achieved in the alloy after forging at temperature 1050°C.

• Periodical: Materials Science Forum (Volume 898)
• Pages: 579-585
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.898.579
• Online since: June 2017
• Authors: Tao Li, Li Hua Chai, Shao Hui Shi, Zhi Lei Xiang, Yong Shuang Cui, Guo Dong Shi, Zi Yong Chen*
• Keywords: Mechanical Properties, Microstructure, Near α High Temperature Titanium Alloy, Near-Isothermal Forging

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