Abstract
Four ingots of China Low Activation Martensitic (CLAM) steel with different Tantalum (Ta) contents of 0.027wt%, 0.078wt%, 0.15wt% and 0.18wt%, respectively, were produced by vacuum induction furnace. Microstructure observation and tensile tests were performed to make clear the effect of Ta content on the microstructure and properties of CLAM steel. Experimental results showed that the content of Ta-riched MX particles increased with Ta content increasing from 0.027wt% to 0.18wt%, and the Cr-riched M23C6 carbides reversed. Meanwhile, the grain size became finer with the increase of Ta content. However, the effect of Ta content on grain size refinement weakened when Ta content was higher than 0.15wt% in this study. Both the grain size and precipitates could affect the tensile properties of the four ingots. The precipitation strengthening of Cr-riched M23C6 carbides was considered to be the main possible reason that CLAM steel with Ta content of 0.027wt% had the highest strength. In general, there was little difference in strength of the four ingots with the change of Ta content.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
