scholarly journals Multi-strengthening-mechanisms in a novel titanium alloy with (TiHf)5Si3 particle-reinforcement

2020 ◽  
Vol 321 ◽  
pp. 11078
Author(s):  
Yan Du ◽  
Jinwen Lu ◽  
Wei Zhang ◽  
Yusheng Zhang
Keyword(s):  
Dislocation Motion ◽  
Heat Treatments ◽  
Triple Junctions ◽  
Strengthening Mechanisms ◽  
Particle Reinforcement ◽  
Solid Solution Strengthening ◽  
Long Period ◽  
Solution Strengthening ◽  
Dislocation Strengthening ◽  
Particle Strengthening

The microstructure and mechanical properties of Ti-2Si-2Nb-2Fe-1Hf-1Ta-1W alloy with (TiHf)5Si3 particle-reinforcement and their underlying relations have been studied. Electron microscope observations and correlative statistical analysis have been made to analyze microstructure evolution with heat treatments. The (TiHf)5Si3 particles with 800 nm in diameter were found uniformly distributed at α/β boundaries and triple junctions and turned out to be stable even after heat treatments at high temperature for a long period, inhibiting grain growth and dislocation motion. In addition, multi-strengthening-mechanisms including particle strengthening, solid-solution strengthening, grain boundary strengthening and dislocation strengthening have been discussed.

The Grain Refining and Strengthening Mechanism of C-Mn Steel by CSP

2011 ◽  
Vol 261-263 ◽  
pp. 712-716 ◽  
Author(s):  
Chao Zhang ◽  
Run Wu ◽  
Chang Song ◽  
Yong Fu Zhang ◽  
Shu Li Li ◽  
...  
Keyword(s):  
Strengthening Mechanism ◽  
Rolling Process ◽  
Precipitation Strengthening ◽  
Physical Metallurgy ◽  
Grain Refining ◽  
Strengthening Mechanisms ◽  
Solution Strengthening ◽  
Dislocation Strengthening ◽  
Mn Steel ◽  
Grain Refinement Strengthening

The grain refining of C-Mn steel on CSP line was investigated in this paper. The grain size was about 100μm after rolling by stand F1 and then decreased all the way of the rolling process(stands F2-F6) to 15μm. The strengthening mechanisms, grain refinement strengthening, solution strengthening, precipitation strengthening and dislocation strengthening, were figured out to develop a physical metallurgy model for prediction of the properties. It was noted that there is an agreement between the predicted properties and the measured ones of the steel.

Fabrication and Strengthening Mechanisms of Al/WC Particles Composite Prepared by Accumulative Roll Bonding

2016 ◽  
Vol 849 ◽  
pp. 397-401
Author(s):  
Chong Yu Liu ◽  
Hong Jie Jiang ◽  
Chun Xia Wang ◽  
Yu Ping Li ◽  
Kun Luo
Keyword(s):  
Mechanical Properties ◽  
Accumulative Roll Bonding ◽  
Metal Matrix ◽  
Matrix Composites ◽  
Strengthening Mechanisms ◽  
Dispersion Strengthening ◽  
Shear Lag ◽  
Roll Bonding ◽  
Dislocation Strengthening ◽  
Aluminium Metal

Aluminium metal matrix composites reinforced with WC ceramic particles were manufactured through warm accumulative roll bonding (ARB) in this study. The microstructures of the composites exhibited excellent particles distribution in the matrices. Compared with the mechanical properties of ARB monolithic pure Al, the Al/WC composites exhibited higher tensile strength. The shear lag theory modified was used in considering the yield strength of the composites. The results indicated that the effects of WC particles in Al/WC composite lead to the thermal expansion dislocation strengthening, small subgrain strengthening, Orowan strengthening and geometrically necessary dispersion strengthening.

Dislocation mechanisms and strengthening methods in metal crystals

2021 ◽  
Author(s):  
V.G. Tkachenko ◽  
Keyword(s):  
State Physics ◽  
Materials Science ◽  
Primary Objective ◽  
Physical Metallurgy ◽  
Strengthening Mechanisms ◽  
Solid State Physics ◽  
Ordered Alloys ◽  
The World ◽  
Dislocation Strengthening ◽  
Basic Ideas

The world advances in the fields of strength physics, physical metallurgy, and materials science are analyzed and summarized with the primary objective of exploring the potential of different dislocation strengthening mechanisms in rare earth and superlight metals, their ordered alloys, cluster-assembled nanophase, and rapid-hardening materials. Besides, the monograph aims to provide a vehicle for exchange and dissemination of basic ideas in the fields. The volume is intended for scientists, engineering, and technical workers specializing in solid state physics and physical metallurgy as well as for educational use by students and postgraduates of relevant specialties.

scholarly journals Recovery of deformation substructure and coarsening of particles on annealing severely plastically deformed Al–Mg–Si alloy and analysis of strengthening mechanisms

2006 ◽  
Vol 21 (2) ◽  
pp. 329-342 ◽  
Author(s):  
I. Gutierrez-Urrutia ◽  
M.A. Muñoz-Morris ◽  
D.G. Morris
Keyword(s):  
Tensile Testing ◽  
Strengthening Mechanisms ◽  
Grain Coarsening ◽  
Angular Pressing ◽  
Dispersed Particles ◽  
Deformation Substructure ◽  
Heat Treated ◽  
Dislocation Strengthening ◽  
Treated State ◽  
Initial Heat

An Al–Mg–Si alloy was annealed to various solutionized and aged states and was then severely plastically deformed by equal channel angular pressing (ECAP). These materials were subsequently annealed for a range of times and temperatures to induce precipitation, dislocation recovery, and grain growth, with changes of mechanical behavior followed by tensile testing. Precipitation of excess solute was seen to occur in all cases, independent of the initial heat treated state, but the particles present appear to play only a small role in stabilizing the deformation substructure, at least until significant particle and grain coarsening has occurred, when discontinuous grain coarsening can be provoked. The strength of materials is examined, and the respective contributions of loosely arranged dislocations, many grain boundaries, and dispersed particles are deduced. It is shown that dislocation strengthening is significant in as-deformed, as well as lightly annealed materials, with grain boundary strengthening providing the major contribution thereafter.

STRENGTHENING MECHANISMS IN AN Al-0.9Mg-0.2Zr (wt.%) ALLOY AFTER ISOTHERMAL AGING

2017 ◽  
Author(s):  
Pedro Lamarão ◽  
Carlos Augusto Silva de Oliveira ◽  
JOSÉ MARIA DO VALE QUARESMA
Keyword(s):  
Isothermal Aging ◽  
Strengthening Mechanisms

Grain-refining and strengthening mechanisms of bulk ultrafine grained CP-Ti processed by L-ECAP and MDF

2021 ◽  
Vol 83 ◽  
pp. 196-207
Author(s):  
Peng-Cheng Zhao ◽  
Guang-Jian Yuan ◽  
Run-Zi Wang ◽  
Bo Guan ◽  
Yun-Fei Jia ◽  
...  
Keyword(s):  
Grain Refining ◽  
Strengthening Mechanisms ◽  
Ultrafine Grained ◽  
Cp Ti
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