Characterization of the hydrogen induced cold cracking susceptibility at simulated weld zones in HSLA-100 steel

Technical Report · Sat Jan 01 04:00:00 EST 1994

OSTI ID:7021424

Stoudt, M R; Ricker, R E

The relative susceptibilities to hydrogen induced cold cracking were evaluated for HY-100, a steel presently in service in naval applications and for HSLA-100. The martensitic microstructure of the HY-100 undergoes wide variations in the heat affected zone during welding which strongly influence the resistance of that alloy to cold cracking. The HSLA-100, a low carbon, precipitation hardened steel with similar strength and toughness to that of the HY-100, possesses a significantly lower degree of hardenability which results in minimal microstructural variations in the heat affected zone under the same simulated welding conditions. The mechanical properties of the base metal and the heat affected zone created during a simulated, single welding pass were characterized by the slow strain rate technique for both steels in an inert environment and in artificial seawater under free corrosion and controlled hydrogen fugacities. The electrochemical behaviors of both steels were also evaluated in artificial seawater.

• Research Organization: National Inst. of Standards and Technology (MSEL), Gaithersburg, MD (United States). Metallurgy Div.
• OSTI ID: 7021424
• Report Number(s): PB-94-174505/XAB; NISTIR--5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101 -- Metals & Alloys-- Preparation & Fabrication
360105* -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
CHEMICAL REACTIONS
CHEMISTRY
CORROSION
CRACKS
ELECTROCHEMISTRY
EMBRITTLEMENT
FABRICATION
HEAT AFFECTED ZONE
HYDROGEN EMBRITTLEMENT
IRON ALLOYS
IRON BASE ALLOYS
JOINING
MICROSTRUCTURE
STEELS
WELDING
ZONES