Unravelling Microstructure Evolution and Grain Boundary Misorientation in Coarse-Grained Heat-Affected Zone of EH420 Shipbuilding Steel Subject to Varied Welding Heat Inputs

Microstructure evolution and grain boundary misorientation in coarse-grained heat-affected zone of EH420 shipbuilding steel have been investigated at different welding heat inputs. As heat input increases, main constituents transform from lath bainites to granular bainites, and to acicular ferrites...

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Published inMetallurgical and materials transactions. A, Physical metallurgy and materials science Vol. 51; no. 3; pp. 1044 - 1050
Main Authors Zou, Xiaodong, Sun, Jincheng, Matsuura, Hiroyuki, Wang, Cong
Format Journal Article
LanguageEnglish
Published New York Springer US 01.03.2020
Springer Nature B.V
Subjects
Characterization and Evaluation of Materials
Chemistry and Materials Science
Communication
Cooling rate
Evolution
Grain boundaries
Heat affected zone
Heat treating
Iron constituents
Materials Science
Metallic Materials
Microstructure
Misalignment
Nanotechnology
Shipbuilding
Structural Materials
Structural steels
Surfaces and Interfaces
Thin Films
Welding
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Summary:Microstructure evolution and grain boundary misorientation in coarse-grained heat-affected zone of EH420 shipbuilding steel have been investigated at different welding heat inputs. As heat input increases, main constituents transform from lath bainites to granular bainites, and to acicular ferrites as a result of reduced cooling rate. Corresponding fraction of high angle grain boundaries decreases from 28.24 to 20.04 pct as heat input is raised from 50 to 150 kJ/cm but reverses to 29.04 pct at 200 kJ/cm.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
ISSN:1073-5623
1543-1940
DOI:10.1007/s11661-019-05604-3