The Study on Microstructure and Properties of a New Metastable Beta Titanium Alloy after Aging Treatment

2011 ◽  
Vol 311-313 ◽  
pp. 782-786
Author(s):  
Xun Yao ◽  
Shuang Jin Liu ◽  
Chun Xiang Cui ◽  
Fen Fei Cai
Keyword(s):  
Titanium Alloy ◽  
Aging Treatment ◽  
Vacuum Furnace ◽  
Test Results ◽  
Beta Titanium Alloy ◽  
Precipitated Phase ◽  
Arc Melting ◽  
Beta Titanium ◽  
Final Aging ◽  
Metastable Beta

New metastable beta titanium alloy Ti-4Al-2.7V-12Mo-10Nb-1Zr-0.2Cr was carried out in the arc melting vacuum furnace. The microstructure and mechanical properties of a new metastable beta titanium alloy Ti-4Al-2.7V-12Mo-10Nb-1Zr-0.2Cr were compared at different aging temperature and time. The growth mechanism of α phase is analysed by comparing the morphology of the precipitated phase at different temperature. Test results indicate that titanium alloy Ti-4Al-2.7V-12Mo-10Nb-1Zr-0.2Cr has the best property through two-step aging treatment. The tensile strength of titanium alloy Ti-4Al-2.7V-12Mo-10Nb-1Zr-0.2Cr after final aging treatment achieves 1180MPa with 8% elongation trough tensile test. The strengthing mechanism was also discussed in this paper.

Effect of Cold Machining Process on the Property and Microstructure of Ti-5Mo-5V-8Cr-3Al Strip

2014 ◽  
Vol 788 ◽  
pp. 134-137 ◽  
Author(s):  
Pei Tong Ni ◽  
Li Peng Zhou ◽  
Bao Liang Bai ◽  
Ming Chen Han ◽  
Mei Sheng Zhu
Keyword(s):  
Solution Treatment ◽  
Aging Treatment ◽  
High Strength ◽  
Machining Process ◽  
Beta Titanium Alloy ◽  
Cold Forming ◽  
Corrugated Shell ◽  
Beta Titanium ◽  
Gas Quenching ◽  
Metastable Beta

Metastable beta titanium alloy Ti-5Mo-5V-8Cr-3Al, with high-strength, favorite ductility and outstanding capacity of cold forming and welding, has been found the applications in sheet metal component, pressure vessel, corrugated shell and cold heading rivet at the temperature lower than 350°C. In the present paper, the effect of cold machining deformation rate and heat treatment process on the properties and microstructures of Ti-5Mo-5V-8Cr-3Al strip were investigated. The results revealed that excellent comprehensive mechanical properties could be achieved with the alloy by reasonable cold machining process and with solution treatment at 800°C followed by gas quenching. Upon a solution and aging treatment at 480°C, the alloy performed favorite plasticity and high ultimate tensile strength of 1250MPa.

Sign in / Sign up

Export Citation Format

Share Document