Effect of Strain Rate and Temperature


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Effect of Strain Rate and Temperature
Effect of Strain Rate and TemperatureThe fracture process depends on the strain rate (which depends on the loading rate) and the temperature. The specific response depends on the material, but here only the effect of these two factors will be examined. Most materials become stronger but more brittle with increasing strain rate and lower temperature. The typical effect of temperature on the true-stress–true-strain curve is shown in Fig. 2.32. Note that the yield strength is increased with decreasing temperature, and that the elongation at fracture is reduced. The fracture surfaces show more flat fracture and less slant fracture as the temperature is reduced.
Citation
Charlie R. Brooks; Ashok Choudhury: Failure Analysis of Engineering Materials. Effect of Strain Rate and Temperature, Chapter (McGraw-Hill Professional, 2002), AccessEngineering Export