Stress Fractures in CPM-154

[TekSec]

Okay, I know this is usually a catastrophic failure having fractures on the edge, however I was wondering what the exact problems are with these? Other than the obvious of looking like crap and weakening the blade.

 

[butcher_block]

stress in heat treat ?
stress in flexing ?
i have made a more then a hand full of blades in cpm154 and am not surer i know what your talking about
i have tried to run it extra hot in heat treat and low temp temper ive pried skids apart with a knife that had little more blade cross section that a folder (braking it a few a few boards mind you)

need more info to help.

 

[mete]

"stress fracture " ? If it wasn't under stress it wouldn't fracture !Need more info , photos .....BTW the bridge in MN [and others] had a cracking problem going back to 1990 .They did a quick fix by drilling a hole at the end of the cracks !!! For an obsolete design [no redundency], 40 years old, 140,000 + vehicles per day that's not an acceptable solution. But the quick fix and "wait and see what happens " is their solution !! .... Maybe I should be suggesting that knife makers 'cure ' their quench cracks by drilling a hole at the end of the crack !!

 

[butcher_block]

Maybe I should be suggesting that knife makers 'cure ' their quench cracks by drilling a hole at the end of the crack !!

well ok mete but only cause you said so
looks like i can "fix" all those old knives i tossed in a pile to be in shop "scrapers":barf: