Dynamic recovery: sufficient mechanism in the hot deformation of Al (<99.99)

Hot workability of AISI 321 and AISI 304 austenitic stainless steels

“…To determine the hot deformation constitutive parameters , the following equations were used [6][7][8][9][10][11][12][13][14].…”

“…, the test is considered to fall into the low stress regime while when 1.2 ασ ≥ , the high stress regime is assumed. Taking natural logarithms on both sides of equations to [3][4][5] and using partial differentiation, various relationships can be obtained as explained by others [6][7][8][9][10][11][12][13][14] and these relationships are tabulated in table 3.1.…”

Recrystallization mechanisms during friction stir welding/processing of aluminum alloys

“…The latter may occur during cooling after completion of deformation or between successive stages of deformation during FSW/P. Dynamic recovery (DRV) occurs readily during hot working of metals of high stacking fault energy such as aluminum [3,5,21]. The flow stress rises during the initial stage of deformation as dislocations multiply and interact.…”

Effect of Stain Rate on Microstructure Evolution and Compressive Deformation Behavior of High-Strength Aluminum Coating Materials Fabricated by the Kinetic Spray Process

“…This result is similar to the result of compressive deformation of general bulk aluminum materials reported by Gourdet and Montheillet, 17) i.e., although dynamic recovery behavior occurs when kinetic sprayed materials have been deformed at high strain rates, it does so only in certain regions. Accordingly, strain softening behaviors decrease greatly, 18) and deformation hardening phenomena, where flow stress is similar to that of general materials' behavior, occur. Given the abovementioned results, kinetic sprayed aluminum materials can be considered to be a new high-strength material wherein severe plastic deformation effects are evenly controlled throughout the material because every powder particle has been independently processed strongly and hardened (during the deposition process).…”