Venugopal, S and Mannan, SL and Prasad, YVRK (1996) Optimization of cold and warm workability in 304 stainless steel using instability maps. In: Metallurgical and Materials Transactions A, 27 (1). pp. 119-126.
Optimization_of_Cold.pdf - Published Version
Restricted to Registered users only
Download (1420Kb) | Request a copy
The deformation characteristics of stainless steel type AISI 3O4 under compression in the temperature range 20 degrees C to 600 degrees C and strain-rate range 0.001 to 100 s(-1) have been studied with a view to characterizing the flow instabilities occurring in the microstructure. At strain rates less than 5 s(-1), 304 stainless steel exhibits flow localization, whereas dynamic strain aging occurs at intermediate temperatures and below 0.5 s(-1). At room temperatures and strain rates less than 10 s(-1), martensite formation is observed. To avoid the preceding microstructural instabilities, cold and warm working should be carried out at strain rates greater than 5 s(-1). The continuum criterion, developed on the basis of the principles of maximum rate of entropy production and separability of the dissipation function, predicts accurately all the preceding instability features.
|Item Type:||Journal Article|
|Additional Information:||Copyright of this article belongs to The Minerals, Metals & Materials Society.|
|Department/Centre:||Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)|
|Date Deposited:||07 May 2011 04:19|
|Last Modified:||07 May 2011 04:19|
Actions (login required)