Hydrogen in HY-130 Weld Metal.
Abstract
This is the final report on a program designed to evaluate the potential for using rare-earth materials to getter hydrogen during welding. The end objective was to reduce the potential for hydrogen embrittlement in HY-130 steel welds. This report briefly summarizes work conducted during the first three years of the program, during which time several varieties of rare-earth containing-electrodes were produced. Cracking problems during drawing were encountered when rare-earth materials were added to high-strength filler wires. A method of addition was found wherein rare-earth silicon and rare-earth nickel compounds were incorporated into a rare-earth cored wire. This wire was then used as a cold-wire addition and weldments were produced by the gas metal-arc process. However, impact properties of these welds were below specified limits. This was partially attributed to the poor welding performance resulting from the rare-earth additions. Increased arc instability resulted in spatter, bead irregularity, and poor wetting action. Weldability improved when argon-O2 mixtures were used but the oxygen addition to the shielding gas oxidized all of the rare earths.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 14, 1979
- Accession Number
- ADA077574
Entities
People
- Daniel Hauser
- Michael D. Hayes
Organizations
- Battelle Memorial Institute