Abstract
ABSTRACTBinary TiAl alloys containing 45–60 at.% Al were studied in detail in order to understand the fundamental deformation behavior and to establish a guideline for advanced alloy design. Because the formation of this compound involves a peritectic reaction, all alloys were processed by the melt spinning technique to minimize segregation. Microstructural and mechanical characterizations were carried out on both the as-solidified and consolidated materials. The results are presented to address the issues of (1) the equilibrium phase relationship, (2) the rapid solidification microstructure, (3) the room temperature deformation behavior, (4) the brittle/ductile transition, (5) the temperature dependence of yield stress, and (6) the implication on alloying effects. Several examples of ternary alloys are given.
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