Centerline cracking in deep penetration electron beam welds in type 304L stainless steel

Journal Article · Wed May 01 00:00:00 EDT 1985 · Weld. J. (Miami); (United States)

OSTI ID:5044947

Lippold, J C

Two combinations of deep penetration, autogenous electron beam welds in Type 304L stainless steel exhibit a significant variation in hot cracking susceptibility which can be associated with the solidification behavior along the weld centerline. In one combination, the entire fusion zone solidifies as primary ferrite and is immune to cracking. In the other combination, a localized shift in solidification from primary ferrite to primary austenite along the weld centerline results in hot cracking within the fully austenitic region. The shift in solidification behavior is not associated with any detectable segregation of major alloying elements but appears to be related to an abrupt change in solidification conditions at the centerline. A model is proposed which describes the effect of the weld pool shape on the local solidification growth rate and resultant solidification mode in high velocity welds in 300-series stainless steels.

• Research Organization: Sandia National Laboratory, Albuquerque, NM
• OSTI ID: 5044947
• Journal Information: Weld. J. (Miami); (United States), Vol. 64:5
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
STAINLESS STEEL-304
CRACK PROPAGATION
ELECTRON BEAM WELDING
TEMPERATURE EFFECTS
WELDED JOINTS
FERRITES
MATHEMATICAL MODELS
PHYSICAL METALLURGY
SOLIDIFICATION
ALLOYS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION RESISTANT ALLOYS
FABRICATION
FERRIMAGNETIC MATERIALS
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
IRON ALLOYS
IRON BASE ALLOYS
IRON COMPOUNDS
JOINING
JOINTS
MAGNETIC MATERIALS
MATERIALS
METALLURGY
NICKEL ALLOYS
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
STAINLESS STEELS
STEELS
TRANSITION ELEMENT COMPOUNDS
WELDING
360101* - Metals & Alloys- Preparation & Fabrication