Abstract
Y-alloy contains Cu 4%, Mg 1.5%, Ni 2% and Al remainder. It is heat-heated and used for piston and cylinder head of internal combustion engine. Its Age-hardening phenomenon is similar to that of 24 S-type super-duralumin. From the constitutional diagram of the Al-Cu-Mg-Ni system, the age-hardening of such an alloy as Y is explained by the precipitation of a ternary compound of Al-Cu-Mg system termed “S” by the author. It is ascertained by the change of dilatation of the quenched specimen on tempering. Si must not be contained in Y-alloy, for it is detrimental to its age-hardening. If Si is contained above a certain percentage, the equilibrium relation of the alloy is displaced to the domain, where S-compound does not separate from the Al-solid solution.
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.
