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| Petrov, R. H. | Madrid |
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Suresh, Kalidass
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Topics
Publications (10/10 displayed)
- 2020Thermomechanical Processing of AZ31-3Ca Alloy Prepared by Disintegrated Melt Deposition (DMD)citations
- 2019High Temperature Deformation Behavior and Processing Maps of AZ31 Alloy Deformed in Tension versus Compression
- 2018Effect of calcium on the hot working behavior of AZ31-1.5 vol.% nano-alumina composite prepared by disintegrated melt deposition (DMD) processingcitations
- 2018Hot Deformation Behavior and Processing Map of Mg-3Sn-2Ca-0.4Al-0.4Zn alloycitations
- 2018Enhancement of Strength and Hot Workability of AZX312 Magnesium Alloy by Disintegrated Melt Deposition (DMD) Processing in Contrast to Permanent Mold Castingcitations
- 2018Connected Process Design for Hot Working of a Creep-Resistant Mg–4Al–2Ba–2Ca Alloy (ABaX422)citations
- 2018Deformation Mechanisms and Formability Window for As-Cast Mg-6Al-2Ca-1Sn-0.3Sr Alloy (MRI 230D)citations
- 2018Review on Hot Working Behavior and Strength of Calcium‐Containing Magnesium Alloyscitations
- 2017Mechanism of Dynamic Recrystallization and Evolution of Texture in the Hot Working Domains of the Processing Map for Mg-4Al-2Ba-2Ca Alloycitations
- 2017High temperature strength and hot working technology for As-cast Mg-1Zn-1Ca (ZX11) alloycitations
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article
Thermomechanical Processing of AZ31-3Ca Alloy Prepared by Disintegrated Melt Deposition (DMD)
Abstract
Mg-3Zn-1Al (AZ31) alloy is a popular wrought alloy, and its mechanical properties could be further enhanced by the addition of calcium (Ca). The formation of stable secondary phase (Mg,Al)<sub>2</sub>Ca enhances the creep resistance at the expense of formability and, therefore, necessitates the establishment of safe working window(s) for producing wrought products. In this study, AZ31-3Ca alloy has been prepared by the disintegrated melt deposition (DMD) processing route, and its hot deformation mechanisms have been evaluated, and compared with similarly processed AZ31, AZ31-1Ca and AZ31-2Ca magnesium alloys. DMD processing has refined the grain size to 2–3 µm. A processing map has been developed for the temperature range 300–450<sup>◦</sup>C and strain rate range 0.0003–10 s<sup>−1</sup>. Three working domains are established in which dynamic recrystallization (DRX) readily occurs, although the underlying mechanisms of DRX differ from each other. The alloy exhibits flow instability at lower temperatures and higher strain rates, which manifests as adiabatic shear bands. A comparison of the processing maps of these alloys revealed that the hot deformation mechanisms have not changed significantly by the increase of Ca addition.