Explanation

A high temperature mechanical property test method to determine the stress release property of materials. The relaxation stability characterizes the mechanical properties of materials against high temperature stress release, and is evaluated according to the relaxation curve measured by the stress release test. The relaxation curve of materials is the curve that the stress decreases with time under the condition that the given temperature and total deformation are constant. The intergranular stability coefficient in the first stage and the intracrystalline stability coefficient in the second stage can be used to characterize the relaxation stability of materials. The main factors affecting the accuracy of the experiment are the uniformity of temperature within the test length of the sample and the accuracy of synchronous measurement of load and elongation.

Classification