【摘要】 在600℃的条件下,对珠光体球铁试样进行了拉伸试验,得到了珠尤体球铁的动态延伸率和残留延伸率与珠光体含量之间的关系:随珠光体含量的增加,试样的动态延伸率增加,而残留延伸率减小。更多还原

【Abstract】 Tensile tests on ductile iron specimens with different pearlitic contents have been carried out at 600℃. Both dynamic elongation and residual elongation have been measured. The results show that with the increase of the pearlitic content, the dynamic elongation of the specimen increases while the residual elongation decreases. It is therefore proposed that both dynamic elongation and residual elongation rather than residual elongation alone be considered as the ductility of ductile iron at elevated temperature (for instance, 600℃).更多还原