期刊
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
卷 26, 期 12, 页码 1053-1063出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/15376494.2018.1430268
关键词
Hadfield steel; fracture toughness; microstructural evolution; joint design geometry; corrosion behavior
Effect of joint shape geometry on properties of Hadfield steels welded via Shield Metal Arc Welding (SMAW) was studied. Fracture toughness, tensile strength, hardness and corrosion behavior were examined by uniaxial tensile testing, Charpy impact test, microhardness test, polarization measurement, and electrochemical impedance spectroscopy, respectively. Results showed that the microstructures of V-shape joint design have smaller grains and more carbide precipitates. Higher microhardness, and strengths were observed for the V-shape joint designs. However, fracture toughness was reduced. Structural micrographs of corrosion surfaces for both joint shapes showed that microgalvanically localized corrosion was lower in X-shape joint.
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