Microstructural study of high-temperature Cr-Ni-Al-Ti alloys supported by first-principles calculations

► Fine NiTi precipitates coherent with the Cr matrix are formed in CrNiTiAl alloys. ► Al prefers substituting for Ti instead of Ni in NiTi precipitates in CrNiTiAl alloys. ► Cr prefers substituting for Ni instead of Ti in NiTi precipitates in CrNiTiAl alloys.