结合蠕变试验结果，研究和分析了三种测定蠕变塑性伸长率的方法。
Combine with the creep experimental results, the three methods for measure plastic percentage elongation of creep are studied and analysed.
用于测定氨纶丝断裂强度、断裂伸长率、定伸长负荷、应力松弛，塑性变形等性能指标。
Used for testing indexes of polyurethane monofilament, such as breaking tenacity, elongation at break, load at specified elongation, relaxation of stress, plastic deformation, etc.
试样在超塑性变形时产生的伸长率与晶界宽度有密切联系。
Elongation of the sample during superplastic deformation has a close relation with grain boundary width.
挤压变形后的合金伸长率也有明显改善，说明挤压变形合金具有很好的塑性。
Extrusion and deformation had obviously improved the elongation rate of alloys, it showed that extruded alloys had excellent plastic property.
搭接接头的塑性较差，伸长率仅有3.18%，不及母材伸长率的25%；
The elongation of joints was only 3.18%, less than 25% that of base metal.
实验结果表明，该合金具有较好的超塑性，采用该方法进行实验，能缩短拉伸实验的时间，并且可以获得良好的伸长率。
The results indicate that the alloy has good superplasticity. Using this method can shorten the time of tensile test and get a good elongation.
实验结果表明，该合金具有较好的超塑性，采用该方法进行实验，能缩短拉伸实验的时间，并且可以获得良好的伸长率。
The results indicate that the alloy has good superplasticity. Using this method can shorten the time of tensile test and get a good elongation.
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