Strength and toughness of USSR Fe-20Cr-16Ni-6Mn-0. 2N weldments at cryogenic temperatures. Final report

Technical Report · Tue Jan 01 00:00:00 EST 1980

OSTI ID:5150145

Yushchenko, K A; Paton, E O; Reed, R P; Tobler, R L; Elmer, J W

The structural reinforcement of large superconducting magnets normally requires the use of a very strong tough alloy at liquid helium temperature. The base and weldment material of a Soviet austenitic stainless steel, a nitrogen-strengthened Fe-20Cr-16Ni-6Mn alloy, is evaluated and compared with conventional AISI 300 series stainless steels (Fe-18Cr-8Ni). Tensile and fracture toughness measurements were made on base, heat-affected zone and weld material. Both tungsten inert gas and submerged arc weld processes, using 20 mm thick plate, were used. Magnetic measurements were made after deformation and tensile flow strengths were compared with the temperature dependence of stable austenitic stainless steels to assess the occurrence and influence of martensitic phase transformations on low temperature properties. J-integral fracture toughness was measured and the base and weldment properties compared.

• Research Organization: National Bureau of Standards, Washington, DC (USA)
• OSTI ID: 5150145
• Report Number(s): PB-82-152687
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
STAINLESS STEELS
FRACTURE PROPERTIES
TENSILE PROPERTIES
CRYOGENICS
HEAT AFFECTED ZONE
PHASE TRANSFORMATIONS
SUPERCONDUCTING MAGNETS
ULTRALOW TEMPERATURE
WELDED JOINTS
ALLOYS
CHROMIUM ALLOYS
CORROSION RESISTANT ALLOYS
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
EQUIPMENT
IRON ALLOYS
IRON BASE ALLOYS
JOINTS
MAGNETS
MECHANICAL PROPERTIES
STEELS
SUPERCONDUCTING DEVICES
ZONES
360103* - Metals & Alloys- Mechanical Properties