Abstract
Invar alloy has lower thermal expansion and is widely used. However, its intensity is too low to meet the requirement of industry. In order to improve its high-temperature strength, WC-Co cemented carbide was welded to invar alloy using high energy Laser-TIG (Tungsten Inert Gas) hybrid welding. WC migration phenomenon was discovered in welding process and its corresponding mechanism was discussed. Microstructure at different interface was discussed and the hardness profile was measured. The results showed: (1) Butt joint of WC-Co/ invar alloy manifested well penetration without any filler materials; (2) WC migration near WC-Co/ weld interface was owed to synthesis action including stirring effects of welds, intrinsic Stress, high pressure of molten materials and ionized shielding gas, interface reaction and surface tension.
Sign-in/Register to access full text options 
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.
