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The effect of deformation rate on JBK-75 stainless steel forgings

Technical Report ·
OSTI ID:5818851
A parametric study was conducted to evaluate the effect of forging rate and forging temperature on the strength and microstructure of a precipitation-hardened, austenitic stainless steel forging. High and low forging rates were achieved using a high energy rate forging (HERF) process and a low velocity mechanical press (MP) respectively. The forging geometry required a two-stage forging sequence. The first stage or preform was identical for both forging processes. The final stage used similar die geometries with minor modifications to accommodate the attachment to the respective hammers. The resulting microstructure and mechanical properties were significantly different. These differences are attributed to the effects of strain rate and temperature. 10 figs., 1 tab.
Research Organization:
Sandia National Labs., Livermore, CA (USA)
DOE Contract Number:
AC04-76DR00789
OSTI ID:
5818851
Report Number(s):
SAND-87-8242; ON: DE88001696
Country of Publication:
United States
Language:
English