Effects of annealing and extrusion on the microstructure and tensile properties of ultrafine-grained Al fabricated by spark plasma sintering

References

• Bowen JR, Prangnell PB, Juul Jensen D, et al. Microstructural parameters and flow stress in Al–0.13% Mg deformed by ECAE processing. Mater Sci Eng A. 2004;387–389:235–239.
   Web of Science ®Google Scholar
• Ovid’ko IA, Valiev RZ, Zhu YT. Review on superior strength and enhanced ductility of metallic nanomaterials. Prog Mater Sci. 2018;94:462–540.
   Web of Science ®Google Scholar
• Lin Y, Yan Z, Xu B, et al. Mechanical behavior of nanostructured and ultra-fine grained Al containing nanoscale oxide particles processed via spark plasma sintering of nano-sized Al powders. J Alloys Compd. 2018;745:677–687.
   Web of Science ®Google Scholar
• Liu D, Xiong Y, Li P, et al. Microstructure and mechanical behavior of NS/UFG aluminum prepared by cryomilling and spark plasma sintering. J Alloys Compd. 2016;679:426–435.
   Web of Science ®Google Scholar
• Zadra M, Casari F, Molinari A. Microstructure and mechanical properties of nanostructured aluminum consolidated by SPS. Mater Sci Forum. 2007;534–536:1401–1404.
   Google Scholar
• Kubota M. Properties of nano-structured pure Al produced by mechanical grinding and spark plasma sintering. J Alloys Compd. 2007;434–435:294–297.
   Web of Science ®Google Scholar
• Molinari A, Lonardelli I, Demetrio K, et al. Effect of the particle size on the thermal stability of nanostructured aluminum powder: dislocation density and second-phase particles controlling the grain growth. J Mater Sci. 2010;45:6739–6746.
   Web of Science ®Google Scholar
• Kubota M, Wynne BP. Electron backscattering diffraction analysis of mechanically milled and spark plasma sintered pure aluminium. Scr Mater 2007;57:719–722.
   Web of Science ®Google Scholar
• Xiong Y, Liu D, Li Y, et al. Spark plasma sintering of cryomilled nanocrystalline Al alloy – part I: microstructure evolution. Metall Mater Trans A. 2012;43:327–339.
   Web of Science ®Google Scholar
• Olevsky EA, Froyen L. Impact of thermal diffusion on densification during SPS. J Am Ceram Soc. 2009;92:S122–S132.
   Web of Science ®Google Scholar
• Huang K, Yang Y, Qin Y, et al. 316 L stainless steel powder densification during the coupled multi-fields activated micro-forming. Mater Manuf Process. 2013;28:183–188.
   Web of Science ®Google Scholar
• Song X, Liu X, Zhang J. Neck formation and self-adjusting mechanism of neck growth of conducting powders in spark plasma sintering. J Am Ceram Soc. 2006;89:494–500.
   Web of Science ®Google Scholar
• Yanagisawa O, Matsugi K, Hatayama T. Effect of direct current pulse discharge on electrical resistivity of copper and iron powder compacts. Mater Trans JIM. 1997;38:240–246.
   Web of Science ®Google Scholar
• Djohari H, Derby JJ. Transport mechanisms and densification during sintering: II. Grain boundaries. Chem Eng Sci. 2009;64:3810–3816.
   Web of Science ®Google Scholar
• Kuczynski GC. The mechanism of densification during sintering of metallic particles. Acta Metall. 1956;4:58–61.
   Google Scholar
• Humphreys FJ. A unified theory of recovery, recrystallization and grain growth, based on the stability and growth of cellular microstructures—II. The effect of second-phase particles. Acta Mater. 1997;45:5031–5039.
   Web of Science ®Google Scholar
• Humphreys FJ. A unified theory of recovery, recrystallization and grain growth, based on the stability and growth of cellular microstructures—I. The basic model. Acta Mater. 1997;45:4231–4240.
   Web of Science ®Google Scholar
• Gholinia A, Humphreys FJ, Prangnell PB. Production of ultra-fine grain microstructures in Al–Mg alloys by coventional rolling. Acta Mater. 2002;50:4461–4476.
   Web of Science ®Google Scholar
• Gholinia A, Humphreys FJ, Prangnell PB. Processing to ultrafine grain structures by conventional routes. Mater Sci Technol. 2000;16:1251–1255.
   Web of Science ®Google Scholar
• Lin Y, Wen H, Li Y. Stress-induced grain growth in an ultra-fine grained Al alloy. Metall Mater Trans A. 2014;45:2673–2688.
   Web of Science ®Google Scholar
• Zener C, Hollomon JH. Effect of strain rate upon plastic flow of steel. J Appl Phys. 1944;15:22–32.
   Google Scholar
• Raghavan M, Shapiro E. Structure and strengthening of Al-Mg alloys during hot working. Metall Mater Trans A. 1980;11:117–121.
   Web of Science ®Google Scholar
• Wei H, Li Z, Xiong DB, et al. Towards strong and stiff carbon nanotube-reinforced high-strength aluminum alloy composites through a microlaminated architecture design. Scr Mater. 2014;75:30–33.
   Web of Science ®Google Scholar
• Billard S, Fondère JP, Bacroix B, et al. Macroscopic and microscopic aspects of the deformation and fracture mechanisms of ultrafine-grained aluminum processed by hot isostatic pressing. Acta Mater. 2006;54:411–421.
   Web of Science ®Google Scholar
• Khamsuk S, Park N, Gao S, et al. Mechanical properties of bulk ultrafine grained aluminum fabricated by torsion deformation at various temperatures and strain rates. Mater Trans. 2014;55:106–113.
   Web of Science ®Google Scholar
• Yu CY, Kao PW, Chang CP. Transition of tensile deformation behaviors in ultrafine-grained aluminum. Acta Mater. 2005;53:4019–4028.
   Web of Science ®Google Scholar
• Le GM, Godfrey A, Hansen N. Structure and strength of aluminum with sub-micrometer/micrometer grain size prepared by spark plasma sintering. Mater Des. 2013;49:360–367.
   Web of Science ®Google Scholar
• Wu X, Yang M, Yuan F, et al. Heterogeneous lamella structure unites ultrafine-grain strength with coarse-grain ductility. Proc Natl Acad Sci USA. 2015;112:14501–14505.
   PubMed Web of Science ®Google Scholar
• Park HK, Ameyama K, Yoo J, et al. Additional hardening in harmonic structured materials by strain partitioning and back stress. Mater Res Lett. 2018;6:261–267.
   Web of Science ®Google Scholar
• Wu X, Zhu Y. Heterogeneous materials: a new class of materials with unprecedented mechanical properties. Mater Res Lett. 2017;5:527–532.
   Web of Science ®Google Scholar
• Shukla S, Choudhuri D, Wang T, et al. Hierarchical features infused heterogeneous grain structure for extraordinary strength-ductility synergy. Mater Res Lett. 2018;6:676–682.
   Web of Science ®Google Scholar
• Zhao YH, Liao XZ, Cheng S, et al. Simultaneously increasing the ductility and strength of nanostructured alloys. Adv Mater. 2006;18:2280–2283.
   Web of Science ®Google Scholar
• Han BQ, Dunand DC. Microstructure and mechanical properties of magnesium containing high volume fractions of yttria dispersoids. Mater Sci Eng A. 2000;277:297–304.
   Web of Science ®Google Scholar
• Frost HJ, Ashby MF. Deformation-mechanism map. Oxford: Pergamon Press; 1982.
   Google Scholar
• Stoller RE, Zinkle SJ. On the relationship between uniaxial yield strength and resolved shear stress in polycrystalline materials. J Nucl Mater. 2000;283–287:349–352.
   Web of Science ®Google Scholar
• Zeng W, Xie J, Zhou D, et al. Bulk Cu-NbC nanocomposites with high strength and high electrical conductivity. J. Alloys Compd. 2018;745:55–62.
   Web of Science ®Google Scholar
• Williamson GK, Hall WH. X-ray line broadening from filed aluminium and wolfram. Acta Metall. 1953;1:22–31.
   Google Scholar
• Williamson GK, Smallman RE. III. Dislocation densities in some annealed and cold-worked metals from measurements on the X-ray Debye-Scherrer spectrum. Philos Mag. 1956;1:34–46.
   Web of Science ®Google Scholar
• Kocks UF, Mecking H. Physics and phenomenology of strain hardening: the FCC case. Prog Mater Sci. 2003;48:171–273.
   Web of Science ®Google Scholar
• Zhu Y, Wu X. Perspective on hetero-deformation induced (HDI) hardening and back stress. Mater Res Lett. 2019;7:393–398.
   Web of Science ®Google Scholar
• Li J, Cao Y, Gao B, et al. Superior strength and ductility of 316L stainless steel with heterogeneous lamella structure. J Mater Sci 2018;53:10442–10456.
   Web of Science ®Google Scholar
• Jiang L, Yang H, Yee JK, et al. Toughening of aluminum matrix nanocomposites via spatial arrays of boron carbide spherical nanoparticles. Acta Mater. 2016;103:128–140.
   Web of Science ®Google Scholar
• Scudino S, Liu G, Sakaliyska M, et al. Powder metallurgy of Al-based metal matrix composites reinforced with β-Al3Mg2 intermetallic particles: analysis and modeling of mechanical properties. Acta Mater 2009;57:4529–4538.
   Web of Science ®Google Scholar
• Zhang Z, Topping T, Li Y, et al. Mechanical behavior of ultrafine-grained Al composites reinforced with B4C nanoparticles. Scr Mater 2011;65:652–655.
   Web of Science ®Google Scholar