The creep and rupture behavior of weld-deposited Type 16-8-2 stainless steel at 593°C was investigated over the time range from 3.6 × 104 s to 2.5 × 107 s. Equations relating stress (σ) to the time to rupture (tr), the time to the onset of tertiary creep (tt), and the time to produce a given creep strain (tεc) were obtained:
$lntr=81.3456−12.176lnσ$

$lntt=80.0786−12.176lnσ$

$lntεc=Aεc−13.0lnσ$

$Aεc=87.3633+1.32066lnεc$

$+0.446428[lnεc]2+1.08131[lnεc]3$

$+6.96513×10−3[lnεc]4$
The experimental results indicate that the control of welding parameters (e.g. current, voltage, and travel speed) within reasonable ranges can yield weld deposits with consistent time-dependent properties. Limited data suggest that high temperature (1065°C) post-weld annealing significantly alters only the flow curve for plastic deformation, while long-term thermal exposure at an intermediate temperature (565°C) produces only minor changes in either the plastic deformation or creep behavior of the weld materials.
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