Published March 1987 | Version v1
Journal article Metadata-only

Features of slowed-down fracture of welded joints of high-strength medium-alloy steels

Creators

Description

Effect of hydrogen and structural factors on the cold crack formation in HAZ of 30KhN2MFA steel welded joints and a slowed-down fracture mechanism at different development stages have been studied. It is established that cold cracks in HAZ of welded joints of the split off type can be formed both at 20 deg C and an elevated temperature (∼ 350 deg C). Diffusive-moving hydrogen (≤ 0.15 cm3 per 100 g metal) decreases sharply resistance to the delayed fracture. Structural difference of HAZ metal of the 30KhN2MFA type steels is insignificant in the cooling rate ranges of 10-40 deg C/s and doesn't affect its resistance to the slowed-down fracture

Additional details

Additional titles

Original title (Russian)
Особенности замедленного разрушения сварных соединений высокопрочных среднелегированных сталей

Publishing Information

Journal Title
Svar. Proizvod.
Journal Issue
no.3
Series
Svar. Proizvod.
ISSN
0491-6441
CODEN
SVAPA

INIS

Country of Publication
Russian Federation
Country of Input or Organization
USSR
INIS RN
18093899
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
CRACK PROPAGATION; FRACTURES; HEAT AFFECTED ZONE; HYDROGEN; LOW ALLOY STEELS; MICROSTRUCTURE; THERMAL CYCLING; WELDED JOINTS
Descriptors DEC
ALLOYS; CARBON ADDITIONS; CRYSTAL STRUCTURE; ELEMENTS; FAILURES; IRON ALLOYS; IRON BASE ALLOYS; JOINTS; NONMETALS; STEELS

Optional Information

Notes
For English translation see the journal Welding Production (UK).