1.前言随着利用超导电磁石的磁浮高速车辆等研制工作的进展,超低温下的材料试验结果成为这些设计中不可忽视的基础资料。本文考虑到上述情况从各种材料试验中选择在超低温下尤为成问题的拉伸、冲击、疲劳等试验,以液氮温度或者该温度以下的试验方法为主,概述了超低温下的材料试验。 1. Introduction With the progress of development of maglev high-speed vehicles using superconductive electromagnets, the material test results at ultra-low temperatures become the basic data that can not be ignored in these designs. In this paper, we take into account the above cases from a variety of materials selected at ultra-low temperatures especially the problem of tensile, impact, fatigue and other tests to liquid nitrogen temperature or below the temperature of the main test methods, an overview of ultra-low temperature materials test.