A eutectic alloy, Fe-13.6Cr-3.7Al+9TaC, was directionally solidified in a high gradient fur¬nace, producing a microstructure of alined TaC fibers in an oxidation resistant a-iron matrix. Tensile and stress rupture properties, thermal cycling resistance, and microstructures were evaluated. The alloy displays at 1000° C an ultimate tensile strength of 58 MPa and a 100-hour rupture life at a stress of 21 MPa. Thermal cycling to 1100° C induces faceting in the TaC fibers.
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