MICROSTRAIN BEHAVIOR OF BODY-CENTERED CUBIC METALS

Abstract

The true elastic limit of high-purity molybdenum, tungsten, and iron is shown to be of the order of 10 −5 μ, where μ is the shear modulus. At higher stresses, linear reversible deformation occurs up to total strains of the order 10 −3 . The strain-rate sensitivity of the flow stress in this region is investigated and a possible rate controlling dislocation mechanism is discussed.