Journal ArticleDOI
Texture variations and mechanical properties of aluminum during severe plastic deformation and friction stir processing with SiC nanoparticles
TLDR
In this article, texture variations and mechanical properties were investigated during constrained groove pressing (CGP) and subsequent friction stir processing (FSP) with different volume fractions of SiC nanoparticles.Abstract:
Annealed 1050-aluminum sheets were severely deformed at the strain magnitude of 2.32 through constrained groove pressing (CGP) process. Texture variations and mechanical properties were investigated during CGP and subsequent friction stir processing (FSP) with different volume fractions of SiC nanoparticles. The results revealed that the predominant texture component in the annealed aluminum was { 001 } 〈 100 〉 cube texture. After CGP, deformed and shear texture components developed while the cube texture was partially remained. In the specimen undergone FSP without nanoparticles, { 001 } 〈 110 〉 rotated cube and nearly { 001 } 〈 110 〉 shear texture component C were mainly pronounced, which was indicative of shear deformation of material in the stir zone. Orientation distribution function analysis from the stir zone demonstrated variations in the texture development with the incorporation of SiC nanoparticles. An increase in the fraction of nanoparticles changed the grain orientation in such a way that the { 001 } 〈 110 〉 shear texture component C gradually developed from the rotated cube texture. However, the overall texture intensity became weaker by increasing the fraction of SiC nanoparticles due to the activation of particle stimulated nucleation mechanism forming randomly oriented grains. The incorporation of SiC nanoparticles in the stir zone also enhanced the yield strength, Young's modulus, and hardness of the stir zone without considerable reduction in the elongation. In such situation, Orowan strengthening was suggested as a dominant mechanism involved.read more
Citations
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Mechanical and tribological characterization of industrial wastes reinforced aluminum alloy composites fabricated via friction stir processing
TL;DR: In this paper, the performance of the fabricated composites as well as the as-cast A356 alloy was assessed through mechanical and tribological characterization, and it was observed that FSP resulted in the eradication of porosity, fragmentation of α-Al dendrites, breakage and redistribution of Si particles, and grain refinement.
Journal ArticleDOI
Nano-Modified Titanium Implant Materials: A Way Toward Improved Antibacterial Properties.
Jianqiao Liu,Jia Liu,Shokouh Attarilar,Chong Wang,Maryam Tamaddon,Chengliang Yang,Kegong Xie,Jinguang Yao,Liqiang Wang,Chaozong Liu,Yujin Tang +10 more
TL;DR: The research progress on the antibacterial properties of various surface nano-modification of titanium implant materials and the related procedures are introduced, and the new trends will be discussed in order to improve the related materials and methods.
Journal ArticleDOI
A Review of Friction Stir Processing of Structural Metallic Materials: Process, Properties, and Methods
TL;DR: A review of the latest achievements in friction stir processing of non-ferrous metal alloys (aluminum, copper, titanium, and magnesium alloys) is given in this article.
Journal ArticleDOI
Enhanced mechanical properties of as-cast Mg-Al-Ca magnesium alloys by friction stir processing
TL;DR: In this paper, friction stir processing of as-cast Mg-7Al, Mg4Al-3Ca (AX43), and Mg2Al-5Ca(AX25) magnesium alloys led to the remarkable grain refinement and enhancement of mechanical properties.
Journal ArticleDOI
Enhanced strengthening of Al–SiC nanocomposites containing a uniform dispersion of dense nanoparticles fabricated by a hybrid accumulative roll-bonding process
TL;DR: In this paper, a hybrid accumulative roll-bonding (HARB) process with ultrahigh rolling cycles was used to construct a SiC reinforced Al-Matrix composites.
References
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Book
Friction Stir Welding and Processing
Rajiv S. Mishra,Zongyi Ma +1 more
TL;DR: Friction stir welding (FSW) is a relatively new solid-state joining process that is used to join high-strength aerospace aluminum alloys and other metallic alloys that are hard to weld by conventional fusion welding as discussed by the authors.
Journal ArticleDOI
Dislocation generation due to differences between the coefficients of thermal expansion
R.J. Arsenault,N. Shi +1 more
TL;DR: In this paper, a simple model based on prismatic punching was developed to account for the relative dislocation density due to the differential thermal contraction, and an in situ transmission electron microscopy investigation was undertaken of dislocation generation at the inclusions due to thermal contraction.
Journal ArticleDOI
Severe Plastic Deformation (SPD) Processes for Metals
Akira Azushima,Reiner Kopp,Antti Korhonen,D.Y. Yang,Fabrizio Micari,G.D. Lahoti,Peter Groche,Jun Yanagimoto,Nobuhiro Tsuji,Andrzej Rosochowski,Akira Yanagida +10 more
TL;DR: In this paper, the authors defined severe plastic deformation (SPD) as metal forming processes in which a very large plastic strain is imposed on a bulk process in order to make an ultra-fine grained metal.
Journal ArticleDOI
On the formation of onion rings in friction stir welds
TL;DR: In this paper, the formation of onion rings is found to be a geometric effect due to the fact that cylindrical sheets of material are extruded during each rotation of the tool and the cutting through the section of the material produces an apparent "Onion Rings".
Journal ArticleDOI
The role of friction stir welding tool on material flow and weld formation
K Kumar,Satish V. Kailas +1 more
TL;DR: In this article, an attempt has been made to understand the mechanism of friction stir weld formation and the role of the friction stir welding tool in it by understanding the material flow pattern in the weld produced in a special experiment.