Author/Authors :
Vِlkl، نويسنده , , R. and Wenderoth، نويسنده , , M. and Preussner، نويسنده , , J. and Vorberg، نويسنده , , S. and Fischer، نويسنده , , B. and Yamabe-Mitarai، نويسنده , , Y. and Harada، نويسنده , , H. and Glatzel، نويسنده , , U.، نويسنده ,
Abstract :
Preliminary work on precipitation-strengthened alloys revealed a Pt–Al–Cr alloy with good mechanical properties and excellent oxidation resistance up to very high temperatures as starting point for further alloy development. A variety of ternary additions to the Pt–Al base are investigated to secure L12 structure of the hardening Pt3Al phase. Ni is in the course added for solid-solution strengthening. Minor additions of B further increase creep resistance and rupture time remarkably, owing to strengthening of the grain boundaries.
Keywords :
Platinum , Superalloy , Creep , Precipitation , Intermetallic
