Abstract
The interaction between interstitial N and C with dislocations in b.c.c. iron has been examined by use of anelastic measurements. Use has been made of both the Snoek damping peak and the cold-work damping peak. If is suggested that methods which depend on use of either effect alone are insufficient for calculation of the strength of the interaction because such methods involve assumptions about the Cottrell atmosphere which apparently are unwarranted. A method is suggested whereby some of these assumptions can be avoided. By its use the binding energy between interstitial C and dislocations is estimated to be 0.5 eV per atom.
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