Microstructure and Mechanical Properties of as-Forged Ti-47Al-2Cr-2Nb-Y Alloy

Abstract:

Ti-47Al-2Cr-2Nb-Y alloy pancake were produced by hot-pack forging. The microstructure of as-forged Ti-47Al-2Cr-2Nb-Y alloy were investigated by optical microscopy and scanning electron microscopy, showing that the forged alloy was composed of fine γ grains and retain cast lamella colonies surrounded by elongated B2 phase. Tensile properties of the material showed that yield strength (YS) and ultimate tensile strength (UTS) were decreased from 500MPa and 612MPa at room temperature to 420 MPa and 462 MPa at 800°C, respectively. With the temperature increasing to 900°C, elongation reached 120%.

• Periodical: Advanced Materials Research (Volumes 311-313)
• Pages: 1873-1878
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.311-313.1873
• Online since: August 2011
• Authors: Shu Zhi Zhang, Fan Tao Kong, Yu Yong Chen, Shu Long Xiao, Chao Cao
• Keywords: Hot Forged, Mechanical Property, Microstructure, TiAl-Based Alloy

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