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本文主要探讨冷拔减面率(ψ<10％)对Fe-Ni-Cr-Ti-Mo-Cu恒弹性合金f(横振共振频率)-t(测量温度)曲线的影响。指出:f-t曲线上出现两个极值——极小值和极大值,随着减面率的增加极小值点A向高温方向移动;其原因是由于合金内部存在内应力引起。极大值点B不随减面率而变化,而是由合金化学成分决定。极小值点A向高温方向移动的速度不同,减面率ψ<9.4％时移动迅速,减面率ψ>9.4％时移动缓慢,或几乎不移动,存在一个临界变形量ψ≈10％。
In this paper, the effect of cold reduction (ψ <10%) on the f (transverse resonant frequency) -t (measured temperature) curve of Fe-Ni-Cr-Ti-Mo-Cu constant elastic alloy was investigated. It is pointed out that there are two extremums - minima and maxima on the f-t curve, and the minimum point A moves toward the high temperature with the decreasing of the deformability. The reason is that the internal stress exists in the alloy. The maximum point B does not change with the reduction rate, but by the chemical composition of the alloy. The minimum point A moves toward the high temperature in a different speed. When the reduction rate ψ <9.4%, the movement speed is very fast. When the reduction rate ψ> 9.4%, it moves slowly or hardly, and there is a critical deformation ψ≈10%.