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锰含量大于～30at.%的Mn-Cu合金是一种具有良好机械性能的高阻尼合金。当代高技术条件下潜艇螺旋桨对高阻尼合金的需求,进一步推动了对该合金的研究[1]。对Mn-Cu合金的微观结构已有报道[2～4]。Mn含量82at.%的合金室温淬火fcc结构的γ相发生四方转变,得到具有fct结构的微孪晶
Mn-Cu alloy with manganese content greater than ~ 30at.% Is a kind of high-damping alloy with good mechanical properties. The demand of high-damping alloys for submarine propellers in modern high-tech conditions has further promoted the research on this alloy [1]. The microstructure of Mn-Cu alloy has been reported [2 ~ 4]. The quenching of the γ phase of the fcc structure at room temperature with an Mn content of 82 at.% Takes place in a four-way transformation to obtain a micro-twin with fct structure