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在含Zr(1.2at-%)的Ni_3Al合金中发现了富Zr低熔点相Ni_5Zr。在1300℃均匀化退火时引起初熔,给粗大凝固组织的消除带来困难,限制了合金性能的进一步提高。
Zr-rich low-melting phase Ni_5Zr was found in the Ni_3Al alloy containing Zr (1.2at-%). The homogenization annealing at 1300 ℃ causes initial melting, which makes it difficult to eliminate the coarse solidified structure and limits the further improvement of the alloy performance.