Effect of ageing temperature after tensile pre deformation on shape memory effect and precipitation process of Cr23C6 carbide in a FeMnSiCrNiC alloy

Researches showed that the shape memory effect (SME) of FeMnSiCrNiC alloys can be remarkably improved through aligned Cr23C6 particles or carbon atom segregation inside grains. To further study on influencing factors in improving SME and aligned precipitation process of Cr23C6 carbide in a FeMnSiCrNiC alloy, effect of ageing temperature after tensile pre deformation on shape memory effect and precipitation process of Cr23C6 carbide in a FeMnSiCrNiC alloy was studied. The results showed that aligned precipitation of Cr23C6 carbide in a FeMnSiCrNiC alloy mainly depends on diffusion capacity and directional segregation of carbon and chromium atoms, namely on ageing temperature, ageing time and the amount of tensile pre deformation.