ISSN:
1573-9325
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Conclusions 1. The creep resistance of low-carbon steel is significantly reduced within narrow temperature intervals during thermal cycling under load in accordance with the scheme 750⇌900°C; this is associated with the short-term retention of the alloy under superplasticity conditions. 2. The process of accumulation of irreversible deformation on passage through the super plasticity interval is distinguished by constant “shifts” of points of locally increased deformation throughout structural components of the alloy in contrast to their strict fixity during normal creep. 3. The stress sensitivity of the super plastic-strain rate, which is governed by the structurally unstable state of the material, increases with increasing external stress, remaining, however, substantially lower than that under conditions of normal creep. 4. The temperature interval of the most vigorous development of the process of superplastic deformation during thermal cycling is extremely narrow (e.g., 10–20°C); in this case, this interval widens somewhat with increasing external stress.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01537307
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