fig21

Figure 21. Development of the hot-corrosion resistant Ni-Si-Al-Y quaternary system: composition-structure-property relationships based on the calculated phase diagrams at 750 and 1140 °C. The proposed composition range may possess a combination of high strength, toughness, as well as excellent high-temperature oxidation and corrosion resistance. Figure reproduced from Ref.^[38] with permission from Elsevier.