Specifications

Technology, Xi'an, 710048, China
Corresponding author: Zhang, M. ([e-mail])
Source title: Applied Mechanics and Materials
Abbreviated source title: Appl. Mech. Mater.
Volume: 310
Monograph title: Engineered Technologies in Materials Science, Geotechnics, Environment and
Mechanical Engineering
Issue date: 2013
Publication year: 2013
Pages: 139-144
Language: English
ISSN: 16609336
E-ISSN: 16627482
ISBN-13: 9783037856697
Document type: Conference article (CA)
Conference name: 2012 International Conference on Engineering Materials, Geotechnical
Engineering and Environmental Engineering, EMGEEE 2012
Conference date: October 26, 2012 - October 28, 2012
Conference location: Shijiazhuang, Hebei, China
Conference code: 96002
Publisher: Trans Tech Publications, P.O. Box 1254, Clausthal-Zellerfeld, D-38670, Germany
Abstract: The microstructure, mechanical properties, fracture morphology and crystal texture
of pipeline steel X100 welded joints were investigated using optical electron microscope,
scanning electron microscope, tensile and impact testing machine. The results show that, the
texture of X100 line pipe mainly consists of acicular ferrite and granular bainite in weld zones, the
microstructure of HAZ is coarser, which lead to softening and embrittlement. The fusion line is
clear between outer weld and inner weld. The tensile strength of welded joint gets to 803 MPa,
which is about 94.81% of the base materials. The impact energy at -10°C is more than 120J, and
the average of percent shear fracture appearance at -10°C is up to 85%, is ductile fractures. ©
(2013) Trans Tech Publications, Switzerland.
Number of references: 5
Main heading: Microstructure
Controlled terms: Ductile fracture - Geotechnical engineering - Heat affected zone -
Impact testing - Mechanical properties - Offshore pipelines - Scanning electron
microscopy - Submerged arc welding - Tensile strength - Welding
Uncontrolled terms: Acicular ferrite - Fracture morphology - Granular bainites -
Impact testing machines - Microstructure and mechanical properties - Properties -
Scanning Electron Microscope - X100
Classification code: 951 Materials Science - 933 Solid State Physics - 741.1 Light/Optics
- 619.1 Pipe, Piping and Pipelines - 538.2.1 Welding Processes - 538.2 Welding - 483
Soil Mechanics and Foundations - 481 Geology and Geophysics - 422.2 Strength of
Building Materials : Test Methods - 421 Strength of Building Materials; Mechanical Properties
- 409 Civil Engineering, General
DOI: 10.4028/www.scientific.net/AMM.310.139