The creep strength of 5Cr-0.5Mo steel was determined at 600°C and 78–170 MPa, as well as its relation to the microstructural changes during the creep tests. The microstructural characterization showed that the creep tests were conducted under the presence of a mixture of both intergranular and intragranular M₇C₃ and M₂₃C₆ carbides dispersed in the ferrite matrix. The n exponent of Norton-Bailey law suggested that the creep deformation process occurred through the ferrite grains, which conducted to a transgranular ductile- fracture mode after creep testing. The creep strength of this steel is directly related to the average radius and number density of carbides present during the test. The ferrite grain size of 5 µm seemed to cause an enhancement of the creep strength for this steel in comparison to that of other similar steels reported in the literature.

测定了5Cr-0.5Mo钢在600°C和78-170 MPa时的蠕变强度，以及其与蠕变测试过程中的显微组织变化的关系。显微组织特征表明，蠕变试验是在存在于铁素体基体中的晶间和晶内M ₇ C ₃和M ₂₃ C ₆碳化物的混合物存在下进行的。该ñNorton-Bailey定律的指数表明，蠕变变形过程是通过铁素体晶粒发生的，经过蠕变测试后，其转变为跨晶延性断裂模式。该钢的蠕变强度与测试过程中存在的碳化物的平均半径和数量密度直接相关。的5铁素体晶粒尺寸μ米似乎导致的这种钢的蠕变强度的提高相比，在文献中报道的其他类似的钢。