Titanium welding wire, ultrasonically inspectable welds and parts formed therefrom, and associated methods

Patent metadata

Field	Value
Publication number	US-9981349-B2
Application number	US-201414533243-A
Country	US
Kind code	B2
Filing date	Nov 5, 2014
Priority date	May 31, 2013
Publication date	May 29, 2018
Grant date	May 29, 2018

Abstract

A welding wire formed of a trace boron titanium base alloy is provided, along with welds formed from the wire and articles comprising one or more of such welds. A method may include forming such a weld or welds from such a welding wire, and may also include non-destructively inspecting titanium alloy articles comprising one or more of such welds using ultrasonic waves to detect internal flaws.

First claim

The invention claimed is:

1. A method comprising the steps of:
providing welding wire formed of a titanium base alloy and boron in a range of about 0.05 to 0.20 percent by weight;
providing first and second titanium base alloy parts; and
forming at least one weld from the welding wire between the first and second parts to secure the parts to one another.

2. A method comprising the steps of:
providing welding wire formed of a titanium base alloy and boron in a range of about 0.05 to 0.20 percent by weight;
forming a first weld layer from the welding wire; and
forming a second weld layer superimposed on and secured to the first weld layer.

3. A method comprising the steps of:
providing welding wire formed of a titanium base alloy and boron in a range of about 0.05 to 0.20 percent by weight;
forming at least one weld from the welding wire; and
ultrasonically inspecting the at least one weld to determine whether the at least one weld has internal flaws.

4. The method of claim 3 wherein the boron is in a range of about 0.05 to 0.15 percent by weight.

5. The method of claim 4 wherein the boron is in a range of about 0.05 to 0.10 percent by weight.

6. The method of claim 3 wherein the boron is in a range of about 0.10 to 0.20 percent by weight.

7. The method of claim 6 wherein the boron is in a range of about 0.10 to 0.15 percent by weight.

8. The method of claim 3 wherein the titanium base alloy is one of: Ti-6Al-4V, Ti-5Al-2Sn-2Zr-4Mo-4Cr, Ti-6Al-2Sn-4Zr-2Mo, Ti-6Al-2Sn-4Zr-2Mo-0.1 Si, Ti-10V-2Fe-3Al, Ti-6Al-2Sn-4Zr-6Mo, Ti-5Al-2.5Sn, Ti-3Al-2.5V, Ti-6Al-4V extra low interstitial, Ti-6Al-6V-2Sn, Ti-15Mo-2.7Nb-3Al-0.2Si, Ti-3Al-8V-6Cr-4Mo-4Zr and Ti-5Al-5V-5Mo-3Cr.

9. The method of claim 3 wherein the titanium base alloy is one of: Ti-(6.5-8)Al-4V, Ti-(5.5-7)Al-2Sn-2Zr-4Mo-4Cr, Ti-(6.5-8)Al-2Sn-4Zr-2Mo, Ti-(6.5-8)Al-2Sn-4Zr-2Mo-0.1 Si, Ti-10V-2Fe-(3.5-5)Al, Ti-(6.5-8)Al-2Sn-4Zr-6Mo, Ti-(5.5-7)Al-2.5Sn, Ti-(3.5-5)Al-2.5V, Ti-(6.5-8)Al-4V extra low interstitial, Ti-(6.5-8)Al-6V-2Sn, Ti-15Mo-2.7Nb-(3.5-5)Al-0.2Si, Ti-(3.5-5)Al-8V-6Cr-4Mo-4Zr or Ti-(5.5-7)Al-5V-5Mo-3Cr.

10. The method of claim 3 wherein the at least one weld comprises a first weld layer and a second weld layer superimposed on and secured to the first weld layer.

11. The method of claim 10 wherein the at least one weld comprises a third weld layer superimposed on and secured to the second weld layer.

12. The method of claim 3 wherein the at least one weld is applied to an aircraft component.

13. The method of claim 12 wherein the aircraft component is one of a former, a bulkhead, a rib, a spar, a pylon, a nacelle, an engine casing, a vane, an exhaust nozzle, an exhaust plug and a heat shield.

Assignees

• Rti Int Metals Inc
• Arconic Inc

Inventors

• Bernath Jeffrey J
• Tamirisakandala Sesh A

Classifications

• B23K1/19

  taking account of the properties of the materials to be soldered · CPC title

• G01N29/043

  in the interior, e.g. by shear waves · CPC title

• Y10T403/479

  Cross-Sectional Technologies · mapped topic

• B23K37/00

  Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass · CPC title

• G01N2291/2694

  Wings or other aircraft parts · CPC title