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Title: Influence of deformation on structural-phase state of weld material in St3 steel

The structural-phase condition of the weld material subjected to the plastic deformation was investigated using the translucent diffraction electron microscopy method. The investigations were carried out near the joint of the weld and the base metal. The seam was done by the method of manual arc welding without artificial defects. The St3 steel was taken as the welded material. Influence of the plastic deformation on morphology, phase composition, defect structure and its parameters of weld metal was revealed. All investigations were done at the distance of 0.5 mm from the joint of the weld and the base metal at the deformation degrees from 0 to 5% and after destruction of a sample. It was established that deformation of the sample did not lead to qualitative changes in the structure (the structure is still presented by ferrite-pearlite mixture) but changed the quantitative parameters of the structure, namely, with the increase of plastic deformation a part of the pearlite component becomes more and more imperfect. In the beginning it turns into the destroyed pearlite then into ferrite, the volume fraction of pearlite is decreased. The polarization of dislocation structure takes place but it doesn’t lead to the internal stresses that can destroymore » the sample.« less
Authors:
; ;  [1] ;  [2] ;  [1] ;  [2] ;  [1] ;  [2] ;  [2] ;  [1] ;  [2] ;  [2] ; ;  [3]
  1. Kuzbass State Technical University, 25-54, Krasnaya Str., 650000, Kemerovo (Russian Federation)
  2. (Russian Federation)
  3. Tomsk State University of Architecture and Building, 2, Solyanaya Sq., 634003, Tomsk (Russian Federation)
Publication Date:
OSTI Identifier:
22494425
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1698; Journal Issue: 1; Conference: AMTC-2015: 2. all-Russian scientific conference of young scientists on advanced materials in technology and construction, Tomsk (Russian Federation), 6-9 Oct 2015; Other Information: (c) 2016 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ARC WELDING; DEFECTS; DEFORMATION; DISLOCATIONS; DISTANCE; ELECTRON DIFFRACTION; ELECTRON MICROSCOPY; FERRITE; MIXTURES; MORPHOLOGY; PEARLITE; PLASTICITY; POLARIZATION; RESIDUAL STRESSES; STEELS; WELDED JOINTS