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decarburization at stress concentrated zone

decarburization at stress concentrated zone

decarburization at stress concentrated zone

(OP)
Hi all,
I have a part made of AISI 8620, it's hot forged and then go for carburizing process. I notice some stress concentrated zone (at right angle corners especially), are found to have appreciably lower carbon content than it intrinsic level. How can this happen?

Best regards,
ct

RE: decarburization at stress concentrated zone

Geometry effects the rate of carburization - in gear teeth for example it is typical to get only about 2/3 the case depth in the root compared to the mid-tooth area.

RE: decarburization at stress concentrated zone

What process are you using to carburize the parts?

A little more information might help someone resolve you problem.

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