Metallurgical Quality Of Raw Materials Of Gr23 Titanium Alloy

Most of the defects of Gr23 titanium alloy forgings exist in the raw material, combined with the consideration of the actual situation of China's titanium industrial production (raw materials, technology, etc.), coupled with the expensive titanium alloy, processing difficulties.
And the shape of the forgings are generally more complex, making the ultrasonic flaw detection of forgings there are certain difficulties (such as dead ends, blind zones, detection direction is unfavorable, etc.), in order to stop the quality of hidden dangers as early as possible in the initial stage, should be strict to the metallurgical quality of the raw materials, the ultrasonic acceptance criteria should be strict requirements, and the method should also be more detailed.
For example, for titanium alloy round bar, in addition to the general circumference of 360 ° radial incident longitudinal wave detection, should also be made 360 ° circumference of the chordal transverse wave detection (refraction angle of 45 °) to ensure that the discovery of straight probe can not be found on the surface and near-surface defects (such as radial cracks).

Chemical Composition

The chemical composition of grade 23 Ti 6Al 4V ELI alloy is outlined in the following table.