Influence of Nb, Ta and Ti on microstructure and high-temperature strength of precipitation-hardened Pt-base alloys

✍ Scribed by M. Wenderoth; S. Vorberg; B. Fischer; Y. Yamabe-Mitarai; H. Harada; U. Glatzel; R. Völkl

• Publisher: Elsevier Science
• Year: 2008
• Tongue: English
• Weight: 495 KB
• Volume: 483-484
• Category: Article
• ISSN: 0921-5093
• DOI: 10.1016/j.msea.2006.12.160

✦ Synopsis

Al was replaced partially by Nb, Ta and Ti in precipitation-hardened Pt-base alloys, resulting in elevated compression strengths at high temperatures. The polycrystalline Pt-base alloys containing 5 at.% Nb and Ta, respectively, are stronger than the single-crystal Ni-base superalloy CMSX-4 in [0 0 1] orientation above 1200 • C. By the addition of Nb, Ta and Ti the ␥ solvus temperature is increased.