Dynamic strain aging in Haynes 282 superalloy

Dynamic strain aging in Haynes 282 superalloy

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Haynes 282 is a newly introduced Ni-based superallony, developed to provide a combination of high-temperature mechanical properties, thermal stability and processability.The present contribution investigates the effect of dynamic strain aging (DSA) on the deformation behaviour of Haynes 282 during monotonic and cyclic loading.It is shown that footjoy weste herren DSA (presumably related to carbon diffusion based on rough estimates of the activation energy) completely dominates the development of the stress during cycling at intermediate temperatures, leading to extensive cyclic hardening and serrated yielding.However, no clear effects on g35 coupe fender the fatigue life or the resulting dislocation structure could be observed.

The tensile properties were not severely affected, in spite of the presence of extensive serrated yielding, although a reduction in ductility was observed in the DSA temperature regime.During monotonic loading at lower strain rates indications of an additional DSA mechanism due to substitutional elements were observed.