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具有Ll_2结构的Ni_3Ga在室温和600℃高温之间有异常力学性能,即在此温度范围内,它的屈服应力随温度的升高而增加。当形变量不大时,在此温度范围内只有初级滑移系启动。
Ni_3Ga with Ll_2 structure has anomalous mechanical properties between room temperature and high temperature of 600 ℃. That is to say, its yield stress increases with the increase of temperature in this temperature range. When the deformation is not large, only the primary slip system is activated in this temperature range.