The constant creep rate was increased and creep-resistance breaking time and creep breaking elongation were decreased with the increase of applied stress.

随施加应力的增大，纤维的恒蠕变速率增大，抗蠕变断裂时间变小，蠕变断裂伸长变小。

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The experimental items of the tests are tension of constant strain rate, creep at constant stress, and strain controlled low cycle fatigue of constant strain rate.

实验项目有等应变率拉伸、等应力蠕变和控制应变幅的等应变率塑性循环。

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The strain rate was changed stepwise several times; and stress relaxation tests and a set of creep tests were performed during otherwise monotonous loading at a constant strain rate.

试验不仅实现了应变率逐步变化加载过程，同时也实现了蠕变加载和应力松弛过程。

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