Abstract
The IN738 nickel-based superalloy has a high Al, Ti and γ’ (Ni3 [Al, Ti]) content phase that causes notable crack sensitivity when processed by laser powder bed fusion (LPBF). After examining the effects of Ti and Co on the microstructure and mechanical properties of IN738 alloy processed by LPBF, this research revealed that a moderate decrease in Ti content and an increase in Co content resulted in a wide range of processing parameters to obtain crack-free LPBF specimens. The samples were treated by different heat-treatment processes and then investigated by scanning electron microscopy (SEM). The newly designed IN738G exhibited an excellent combination of tensile strength (1253.5 MPa) and elongation (16.37%) compared to the IN738 alloy (1115.7 MPa, 6.99%) under room-temperature conditions.
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.
