“…[9][10][11] However, the higher Mn concentration would directly cause the alloy brittler, and other severe problems such as the lower elongation, impact toughness, and corrosion resistance. [11,13] Even so, there are still some key problems that need to be solved further in order to gain better effect in practical applications, such as relatively low M s , insufficient martensitic transformation, and low service temperature. Therefore, in order to get both high damping capacity and good mechanical property simultaneously, Mn-Cu based alloys with Mn concentration of %70 at% are often used in many branches of industry, and in the meantime some alloying elements were added to further improve their overall performance.…”