Effect of Ce element on microstructure and properties of 12CrNi2Ce alloy steel prepared by laser direct metal deposition
Source abstract
Abstract
12CrNi2Ce alloy steel powders with different Ce contents were used for samples prepared by laser direct metal deposition for crankshafts of emergency diesel generators. The effect of Ce element on the microstructure and properties of the 12CrNi2Ce alloy steel was studied by optical microscopy, scanning electron microscopy, x-ray diffraction, Vickers microhardness, and tensile test. The results show that Ce element segregated at the bainite ferrite interphase and affected the diffusion of C, O, and S. Ce refined bainitic ferrite and M/A island, increased M/A island content, and generated Ce2O2S precipitated phase, which improved the hardness, strength, and toughness through dispersion strengthening and precipitation hardening. The mechanical properties of samples with a Ce content of 0.879% met crankshaft performance requirements.
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Research context
OpenAlex topics: Metal and Thin Film Mechanics · Metal Alloys Wear and Properties · Hydrogen embrittlement and corrosion behaviors in metals
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Key Laboratory for Anisotropy and Texture of Materials, Ministry of Education, Key Laboratory for Laser Application Technology and Equipment of Liaoning Province, School of Materials and Engineering, Northeastern University , Shenyang 110819, Liaoning, China
Funding
China Green manufacturing system Integration Project of the Industry and Information Ministry · China National Key Reseach Project
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Show source-provided references
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