Electroslag Remelting and Weldability of Austenitic Steels,
Abstract
Problems connected with crystalline crack formation have been studied in the austenitic joint based on parimary crystallization in the welding bath. However, the formation of cracks in the base metal is more involved. The cracks appear between the grains in the overheated zone close to the joint, and consist of both crystalline cracks and intergranular cracks. The conditions of formation of intergranular cracks have been investigated insufficiently. The main cause of their appearance is not only embrittlement by precipitation, but also by contamination of the boundary volumes of austenitic grains with fusible elements such as phosphorus, sulfur, lead, tin, antimony, arsenic, non-metallic inclusions and gases. Cracking of austenitic steel is thus caused by its contamination. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 20, 1970
- Accession Number
- AD0704200
Entities
People
- B. I. Medovar
Organizations
- National Air and Space Intelligence Center