On the superplastic deformation mechanisms of near-α TNW700 titanium alloy

Author(s):  
Lixia Ma ◽  
Min Wan ◽  
Weidong Li ◽  
Jie Shao ◽  
Xiaoning Han ◽  
...  
Materials ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 906
Author(s):  
Dong Han ◽  
Yongqing Zhao ◽  
Weidong Zeng

The present study focuses on the effect of 1% Zr addition on the microstructure, tensile properties and superplasticity of a forged SP700 alloy. The results demonstrated that Zr has a significant effect on inhibiting the microstructural segregation and increasing the volume fraction of β-phase in the forged SP700 alloy. After annealing at 820 °C for 1 h and aging at 500 °C for 6 h, the SP700 alloy with 1% Zr showed a completely globular and fine microstructure. The yield strength, ultimate tensile strength and tensile elongation of the alloy with optimized microstructure were 1185 MPa, 1296 MPa and 10%, respectively. The superplastic deformation was performed at 750 °C with an elongation of 1248%. The improvement of tensile properties and superplasticity of the forged SP700 alloy by Zr addition was mainly attributed to the uniform and fine globular microstructures.


2019 ◽  
Vol 120 (1) ◽  
pp. 87-94 ◽  
Author(s):  
O. A. Yakovtseva ◽  
A. V. Mikhaylovskaya ◽  
A. D. Kotov ◽  
O. I. Mamzurina ◽  
V. K. Portnoy

2012 ◽  
Vol 43 (10) ◽  
pp. 3776-3785 ◽  
Author(s):  
Hidayah Mohd Khalid ◽  
Iswadi Jauhari ◽  
Adibah Haneem Mohamad Dom

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