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The effects of rare earth elements (REEs) (like Y, Ce, Nd and Dy) on the microstructure and mechanical properties of cast NiAl–28Cr–5.5Mo–0.5Hf alloy were investigated. The results suggest that the microstructure of REEs-doped alloys gradually refines with increasing REEs addition and the appropriate addition of REEs can improve the compressive ductility and yield strength at room temperature. In...
The NiAl–28Cr–5.7Mo–0.3Hf eutectic alloy was fabricated by injection casting to investigate the effect of rapid solidification on the microstructure, solubility expansion and hardening mechanism of the alloy. The results showed that the forming ability of injection casting was quite poor owing to the near eutectic composition of the present alloy; the microstructure of injection cast alloy presented...
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