Accession Number:

ADA128613

Title:

Ultrasonic Detection of Oxygen in Titanium Alloy Plates and Weldments.

Descriptive Note:

Final rept. 1 Feb-31 Oct 82,

Corporate Author:

JOHNS HOPKINS UNIV BALTIMORE MD DEPT OF MATERIALS SCIENCE AND ENGINEERING

Report Date:

1982-12-01

Pagination or Media Count:

29.0

Abstract:

Dissolved oxygen contamination during GTA and GMA welding of titanium alloys can result in severe embrittlement of the weld region. In order to evaluate the feasibility of ultrasonic testing for quantitatively detecting the presence of interstitial gas contamination in weldments of Ti-6211, ultrasonic wave velocity and ultrasonic attenuation measurements were performed on a series of five specimens with nominal oxygen levels of 0.07, 0.14, 0.20, 0.24 and 0.29 percent by weight. Density measurements, in addition to the ultrasonic wave velocity data, enabled relative determination of elastic moduli. Variations in the ultrasonic data were correlated with results from scanning electron microscopy and hardness testing. Author

Subject Categories:

  • Properties of Metals and Alloys
  • Fabrication Metallurgy
  • Test Facilities, Equipment and Methods

Distribution Statement:

APPROVED FOR PUBLIC RELEASE