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随着原子能工业的发展,锆合金的性能测试工作也相应地得到了发展。近几年来,我们对φ8×0.65锆2管材做了拉力试验,并用百分表引伸计和负荷伸长曲线两种方法求其屈服强度。实践证明,用上述两种方法测其σ_(0.2)能满足技术条件的要求。两种方法相比,用百分表引伸计测σ_(0.2)较用X—Y纪录仪作图,操作麻烦,试验人员多,特别是在高温下影响测量精度的因素多,多次试验证明,用作图法所得数据较稳定。因此我们目前采用了作图法求屈服强度值,现将锆合金拉力试验方法简介如下:
With the development of atomic energy industry, the performance testing of zirconium alloy has also been correspondingly developed. In recent years, we did a tensile test on φ8 × 0.65 zirconium 2 pipe and obtained its yield strength by using two methods of extensometer and load elongation curve. Practice has proved that the above two methods to measure the σ_ (0.2) can meet the technical requirements. Compared with the two methods, it is troublesome to operate σ_ (0.2) by using the extensometer of extensometer. There are many test personnel, especially the factors that affect the measurement accuracy under high temperature. Many tests prove that , The data obtained for the graph method is more stable. Therefore, we currently use the method of drawing the value of yield strength, now the zirconium alloy tensile test method is as follows: