Guy Thomas Posted January 19, 2007 Share Posted January 19, 2007 This came up on another forum under a discussion of differentially heat treated blades (the whole bend rather than break topic). It was put forth that a new heat treatment might fix any damage done to a blade that was bent to 90 degrees and then bent back straight. Unfortunately I'm a bit ignorant of the exact nature of the mechanical damage done to a metal when it is bent or over-flexed (are the grain boundaries stressed/fractured by the storing and releasing of energy from the bending?). My instinct is to doubt that simply re-heat treating such a blade would "repair" any damage. Just exactly what damage if any is done to a steel blade that has been bent 90 degrees and then straightened. (Obviously if you keep bending it the blade will break but is the steel damaged by that first bend?) Anyway seemed like an interesting topic. Guy Thomas Link to comment Share on other sites More sharing options...
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