在Gleeble-3800热模拟试验机上，利用单轴压缩模块设计了一种低应力加载试验。该试验克服了Gleeble-3800试验机压缩模块低应力控制不稳定的问题，实现了固定温度下单轴低应力加载，加载力维持在-200～-500 N。通过该试验可以在完成材料单轴压缩试验的同时，测得材料在低应力加载条件下的贝氏体相变过程，为在Gleeble-3800热模拟试验机上实现低应力加载条件下研究贝氏体相变过程提供了解决方案。

A low stress loading test was designed based on single axial compression module on Gleeble-3800 thermal simulation test machine. The test scheme overcame the instability problem of low stress control of the Gleeble-3800 compression module, and realized the single-axial low stress loading under the fixed temperature, and the loading force was maintained between -200 N and -500 N. Through this test, the process of the bainite transformation could be measured under the condition of single-axial low stress loading at the same time. The test scheme provided a solution for the study of bainite transformation process under the low stress loading on the Gleeble-3800 thermal simulation test machine.