WHAT'S ALL THIS FUSS ABOUT HEAT-AFFECTED ZONES?
Temperature gradients produced in the steel during welding cause partial melting of the base metal adjacent to the weld, and a heat treatment effect on areas further away. This condition, and changed microstructure, produces a brittle area and potential cracking in the HAZ. The retention of hydrogen in the weld metal, also causes embrittlement and hydrogen induced cracking. Potential solutions are described, such as low hydrogen electrodes and preheating of weld area.
Chilton CompanyChestnut and 56th Streets
Philadelphia, PA USA 19139
- Irving, R R
- Publication Date: 1974-4-22
- Pagination: 8 p.
- Iron Age
- Volume: 213
- Issue Number: 16
- Publisher: Chilton Company
- TRT Terms: Cracking; Embrittlement; Heat affected zone (Metals); Joints (Engineering); Welds
- Uncontrolled Terms: Crack propagation; Hydrogen embrittlement; Welded joints
- Subject Areas: Marine Transportation; Materials;
- Accession Number: 00057617
- Record Type: Publication
- Source Agency: Engineering Index
- Files: TRIS
- Created Date: Oct 5 1974 12:00AM