Abstract
In an attempt to measure the critical resolved shear stress for slip of bcc metals, Fe–2%V single crystals were compressed along [110] direction, constraining the side faces, (001) and (001̄), with a pair of fixed walls. Under these conditions, all slips are geometrically expected to be suppressed, and consequently [100] or [010] slip will be activated. Electron microscope study on specimens compressed in the above mentioned manner, however, showed no sign of slip being activated and it was concluded that at room temperature the critical resolved shear stress for slip was over an order of magnitude higher than that for slip.

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