Transactions of Materials and Heat Treatment

Title：Research on die forging process and mechanical properties of titanium alloy TC4 fan propeller blade

Authors： YU Xiao-lu LI Fu-guo

Unit： Anhui University of Technology and Science Northwestern Polytechnical University

KeyWords： titanium alloy blade forging process mechanical property

ClassificationCode：TG146.2

year,vol(issue):pagenumber：2010,35(3):19-21

Abstract：

The heating procedure, die forging and heat treatment process of TC4 titanium alloy fan propeller blade were studied. The process ability and properties of the blade were comprehensively evaluated by tensile tests under room-temperature and 400 ℃ impact tests, endurance tests under 400 ℃ in all four main parts of the blade. The results show that the distribution of mechanical properties is even in the blade. The intensity of blade body is slightly higher than that of blade top and root, their plasticity level is uniform. Namely, the mean values of σ_b at room temperature are 966, 962 and 963 MPa respectively，the mean values of σ_0.2 are 916, 905 and 912 MPa respectively，the values of δ₅ and ψ are about 15% and 47% separately. The mean values of σ_bat 400 ℃ are 669 and 643 MPa, respectively，the values of δ₅ and ψ are about 16% and 67% separately. The whole blade has uniform, favorable impact property,and the mean values of α_kv and HB(d) are 0.46 MJ·m^-2，3.47 mm respectively. Meanwhile, the blade has satisfactory enduring life (more than 101 h) under large load (560 MPa).

Funds：

安徽省高等学校省级自然科学研究项目（KJ2009B134）

Reference：

［1］张志文.叶片锻造[M].西安：西安交通大学出版社,1987.
［2］陈宇,徐永超,单德彬.TC4钛合金锥形件温热剪旋实验研究[J].锻压技术,2009,34(3):44-46.
［3］李重河,朱明,王宁.钛合金在飞机上的应用[J].稀有金属,2009,33(1):84-91.
［4］马宝军,贾栓孝,冯永琦.TC4半球形锻件成形工艺改进[J].航空制造技术,2009,(10):94-95.
［5］Sergey Zherebtsov, Gennady Salishchev, Witold ojkowski. Strengthening of a Ti-6Al-4V titanium alloy by means of hydrostatic extrusion and other methods [J]. Materials Science and Engineering: A, 2009, 515(12):43-47.
［6］Madalina Calamaz, Dominique Coupard, Franck Girot. A new material model for 2D numerical simulation of serrated chip formation when machining titanium alloy Ti-6Al-4V [J]. International Journal of Machine Tools and Manufacture, 2008, 48(3-4):275-279.
［7］Florent Bridier, David L Mcdowell, Patrick Villechaise. Crystal plasticity modeling of slip activity in Ti-6Al-4V under high cycle fatigue loading[J]. International Journal of Plasticity, 2009, 25(6):1066-1070.
［8］Akman E, Demir A, Canel T, et al. Laser welding of Ti6Al4V titanium alloys[J]. Journal of Materials Processing Technology, 2009, 209(8):3705-3709.
［9］Luo Jiao, Li Miaoquan, Li Hong. Effect of the strain on the deformation behavior of isothermally compressed Ti-6Al-4V alloy[J]. Materials Science and Engineering: A, 2009, 505(12):88-95.

Service：

【This site has not yet opened Download Service】【Add Favorite】