Effects of inclusions on dislocation behavior during deformation process of dissimilar steel-welded joints using acoustic emission and transmission electron microscopy
Source abstract
Abstract
Dissimilar welded joints are widely used, and the research on their deformation mechanism is of great significance. Effects of inclusions on dislocation behavior during deformation process of dissimilar steel-welded joints were studied with the aid of acoustic emission (AE) and transmission electron microscope (TEM). In this study, Q345B base metal (BM), Q345B/Q345B (SW), and Q345B/Q235B (DM) welded joints were selected. The results show that the deformation mechanism of the DW sample during the yielding stage is dislocation unpinning, which is from synergistically acting of inclusions and coarse ferrite grains, which is different from the BM and SW samples. During the hardening stage, inclusions with diameterx(2 μm <x) and the proportion of inclusions with diameterxmay be the two critical factors affecting the new Portevin Le Châtelier-like behavior at room temperature. Moreover, this paper proposes a characterization method based on AE and material microscopic damage.Graphical abstract
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Hydrogen embrittlement and corrosion behaviors in metals · Titanium Alloys Microstructure and Properties · Microstructure and Mechanical Properties of Steels
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (35)
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