Effect of Temperature on Stress Relaxation of Several Metallic Materials

Abstract

07974The effect of temperature on the stress relaxation characteristics of a number of metals is reviewed. Stress-relaxation behavior is shown to be much more sensitive to change~ in temperature than to changes in the applied stress. It is shown that heat treatment will minimize stress relaxation by either reducing residual stress or by inducing strengthening mechanisms such as age hardening. In some alloy systems stress relaxation may proceed simultaneously with metallurgical processes which may affect the experimental results.

Temperature-Induced Stress Relaxation in Alloyed Silver–Gold Nanoparticles (7–8 nm) by in Situ X-ray Powder Diffraction

“…This deviation continuously decreased with increasing temperature to about one-third (about 0.2%) which is comparable to bulk materials of the same composition . This indicates a thermally induced structural relaxation of the Ag:Au nanoparticles as it is characteristic for metals during heat treatment . This relaxation occurred between 150 and 250 °C (Figure ).…”

“…43 This indicates a thermally induced structural relaxation of the Ag:Au nanoparticles as it is characteristic for metals during heat treatment. 44 This relaxation occurred between 150 and 250 °C (Figure 4). Notably, nanoparticles of pure silver and gold did not show a thermal relaxation because only a little stress was present before.…”