Baoji Hengyuxin Metal Co., Ltd.

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+86-18740677522
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Baoji Hengyuxin Metal Co., Ltd.
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Tel:+86-0917-6735123
Phone:+86-18740677522
Email:sales@hyxti.com
Address:No.168 Gaoya Village Industrial Zone,Bayu Town,Gaoxin Development District,Baoii,shaanxi.China
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Manufacturers introduce the factors that affect the use time of titanium alloy rod!

Release time:2022-08-18 10:12:43 丨 Number of visits:

The fatigue and fracture properties of titanium alloy rod play an important role in determining the service life of alloy. The fatigue and fracture mechanisms of titanium alloy bars and their relationship with various metallurgical factors have been studied in recent years. Due to the complexity of the problem itself and the dispersion of data from the initial tests, some substantive issues are still not very clear and views are not completely unified, so only some representative conclusions are presented here.


Like other materials, the fatigue life of titanium alloy rod depends on the probability of crack nucleation and crack propagation rate. According to the study of pure titanium, most fatigue cracks within the slip zone and the twin boundary surface nuclear, but for the Ti - 6 ai - 4 v alloy, this type under the condition of low stress, a and b phase interface is Z weak link, just in a high stress level, slip band endogenous nuclear risk increased significantly, improve test temperature has a similar effect, in order to improve the fatigue performance, For A 10 B titanium alloy rod, it is usually desirable to obtain fine equiaxed A 10 B structure, and the B phase is usually in a free state, so as to reduce the interface area of A/B phase. In addition, the slip of fine grains is relatively uniform and the free slip distance is short, which can reduce the stress concentration caused by dislocation plug accumulation. At the same time, the fine crystal also restrains the twins. On the contrary, the coarse-grained Weisner structure has low fatigue strength due to the easy nucleation of fatigue cracks. Effect of grain size on fatigue properties of smooth and notched TI-6A1-4V alloy specimens.


In the presence of notch and stress concentration, the influence of grain size is reduced, because the fatigue life depends mainly on the crack growth rate, while the experimental results of pure titanium show that the crack growth rate is not closely related to the grain size.



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Baoji Hengyuxin Metal Co., Ltd.
Tel:+86-0917-6735123
   +86-18740677522
E-mail:sales@hyxti.com
Add:No.168 Gaoya Village Industrial Zone,Bayu Town,Gaoxin Development District,Baoii,shaanxi.China
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