Accelerated discovery of Cr-based A2+B2 superalloys across 11 elements with a deep-learning CALPHAD surrogate (opens in new tab)

Chromium is an attractive platform for next-generation refractory alloys, but its practical use is limited by room-temperature brittleness. Here, we present a multi-criteria discovery workflow for Cr-based A2+B2 superalloys. A deep-neural-network surrogate reproduces CALPHAD phase fractions and A2-matrix chemistries with a per-field-averaged root-mean-square error below 2 percentage points and provides a speed-up exceeding 10,000×, enabling thermodynamic screening of >108 compositions in an 1...