Tensile Properties of JLF-1 Steel at Elevated Temperature

Huai Lin Li

doi:10.4028/www.scientific.net/AMM.204-208.3872

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 204-208Tensile Properties of JLF-1 Steel at Elevated...

Tensile Properties of JLF-1 Steel at Elevated Temperature

Abstract:

In this paper, the tensile properties of JLF-1 steel at strain rate of 0.1%/s and 0.02%/s were studied from room temperature to 873K in vacuum using engineering specimens. The strain rate does not affect YS, UTS and RA as far as the tests performed in this study. Strain hardening of JLF-1 steel decreased significantly above 673 K, RA also increased rapidly above 673 K; and the surface fractography was changed from shear fracture below 673 K to dimple fracture at 773 K and 873 K. That means JLF-1 steel becomes perfect elastic-plastic body (without strain hardening) and ductility improved with temperature increase.