Journal ArticleDOI
Instability map for hot working of 6061 Al-10 vol% metal matrix composite
TLDR
In this paper, a simple condition for metallurgical instability, useful in the development of processing maps for analysing high-temperature forming of metals, is suggested following a criterion based on continuum principles as applied to large plastic flow proposed by Ziegler.Abstract:
A simple condition for metallurgical instability, useful in the development of processing maps for analysing high-temperature forming of metals, is suggested following a criterion based on continuum principles as applied to large plastic flow proposed by Ziegler. It can be used for any type of flow stress versus strain rate curve. This criterion has been validated using the flow stress data of a 6061 Al-10 vol% metal matrix composite with microstructural observations. Optimum hot working conditions based on the instability map are suggested for this material.read more
Citations
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Identification of flow instabilities in the processing maps of AISI 304 stainless steel
TL;DR: In this article, a simple instability condition based on the Ziegler's continuum principles was applied to large plastic flow, which can be used to any flow stress versus strain rate curve and was validated using the flow stress data of AISI 304 stainless steel with microstructural observations.
Journal ArticleDOI
Characterization of hot deformation behavior of extruded ZK60 magnesium alloy using 3D processing maps
J.F. Li,Juan Liu,Zhenshan Cui +2 more
TL;DR: In this paper, the deformation activation energy of extruded ZK60 magnesium alloy was investigated by compression tests in the temperature range of 250-400°C and strain rate range of 0.001-1−s−1.
Journal ArticleDOI
Characterization of the hot deformation behavior of a Ti–22Al–25Nb alloy using processing maps based on the Murty criterion
TL;DR: In this paper, an analysis of the stress-strain behavior, kinetics and the processing map for obtaining optimum processing windows and achieving desired microstructures during hot working was carried out.
Journal ArticleDOI
Experimental investigation of the hot deformation behavior of AA7075: Development and comparison of flow localization parameter and dynamic material model processing maps
Arash Jenab,A. Karimi Taheri +1 more
TL;DR: In this paper, the hot deformation characteristics of 7075 aluminum alloy (AA7075) were investigated by means of hot compression tests carried out in the temperature range of 200-450°C and strain rate range of 0.0003-1-s−1.
Journal ArticleDOI
Hot deformation of 15-5 PH stainless steel
Mehrdad Aghaie-Khafri,F. Adhami +1 more
TL;DR: In this paper, the hot deformation behavior of 15-5 PH stainless steel has been studied using hot compression tests over the temperature range of 900-1150°C and strain rates varying between 0.001 and 0.5 s −1.
References
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Journal ArticleDOI
Modeling of dynamic material behavior in hot deformation: Forging of Ti-6242
Y. V. R. K. Prasad,Y. V. R. K. Prasad,H. L. Gegel,S. M. Doraivelu,J. C. Malas,J. T. Morgan,K. A. Lark,D. R. Barker +7 more
TL;DR: In this article, a new method of modeling material behavior which accounts for the dynamic metallurgical processes occurring during hot deformation is presented, which considers the workpiece as a dissipator of power in the total processing system and evaluates the dissipated power co-contentJ = ∫o σ e ⋅dσ from the constitutive equation relating the strain rate (e) to the flow stress (σ).
Journal ArticleDOI
Silicon Carbide Reinforced Aluminum—A Formable Composite
TL;DR: In this article, a class of composites fabricated from inexpensive constituents, silicon carbide made from rice hulls and aluminum, which can be processed by conventional metal working techniques, is described.
Journal ArticleDOI
Processing map for hot working of 6061 Al–10 vol.-%Al2O3 metal matrix composite
TL;DR: In this paper, a processing map for hot working of 6061 Al-10 vol.-%Al2 O3(p) reinforced cast and extruded composite material has been generated covering the temperature range 350-550°C and the strain rate range 0·001-100 s−l, based on the dynamic materials model.