Investigation of Steels for Improved Weldability in Ship Construction.
Abstract
The purpose of the present three-phase investigation is to develop economical ship-plate steels with improved heat-affected-zone (HAZ) toughness whne welded at high heat inputs. The first phase consisted of a literature review aimed at identifying economical compositions and processing methods that were expected to result in steels having good HAZ toughness when welded at high heat inputs. This review resulted in the selection of 20 steels to be melted and evaluated at the Research Laboratory. The present report summarizes Phase II. During this phase, the 20 laboratory-melted steels were produced with compositional variations in the content of titanium, nitorgen, vanadium, boron, calcium, and rare-earth metals. These steels were rolled to 1-inch-thick plate and normalized. Thermal cycles occurring in the HAZ near the fusion line of high-heat-input weldcs were simulated in samples of all these steels. On the basis of the toughness and microstructure of these simulated-weld samples, eight of the laboratory-melted steels were selected for welding along with three commerically produced ship steels.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1981
- Accession Number
- ADA117053
Entities
People
- B. G. Reisdorf
- W. F. Domis
Organizations
- U.S. Steel